buffer manager refactoring; started work on new dirty page table writeback interface (to avoid circular dependencies)
This commit is contained in:
Sears Russell
parent
d01e63e1e4
commit
24650fa190
15 changed files with 400 additions and 329 deletions
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@ -57,16 +57,8 @@ terms specified in this license.
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#include <assert.h>
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#include <stasis/bufferManager.h>
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#include <stasis/bufferManager/pageArray.h>
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#include <stasis/bufferManager/bufferHash.h>
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//#include <stasis/bufferManager/legacy/pageCache.h>
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#include <stasis/bufferManager/legacy/legacyBufferManager.h>
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#include <stasis/bufferPool.h>
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#include <stasis/lockManager.h>
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#include <stasis/pageHandle.h>
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#undef loadPage
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#undef releasePage
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@ -130,7 +122,6 @@ compensated_function Page * __profile_loadPage(int xid, pageid_t pageid, char *
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}
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compensated_function void __profile_releasePage(Page * p) {
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pthread_mutex_lock(&profile_load_mutex);
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@ -157,30 +148,23 @@ compensated_function void __profile_releasePage(Page * p) {
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#endif
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Page * (*loadPageImpl)(int xid, pageid_t pageid, pagetype_t type) = 0;
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Page * (*loadUninitPageImpl)(int xid, pageid_t pageid) = 0;
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Page * (*getCachedPageImpl)(int xid, pageid_t pageid) = 0;
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void (*releasePageImpl)(Page * p) = 0;
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int (*writeBackPage)(pageid_t page) = 0;
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void (*forcePages)() = 0;
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void (*forcePageRange)(pageid_t start, pageid_t stop) = 0;
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void (*stasis_buffer_manager_close)() = 0;
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void (*stasis_buffer_manager_simulate_crash)() = 0;
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Page * loadPage(int xid, pageid_t pageid) {
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// This lock is released at Tcommit()
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if(globalLockManager.readLockPage) { globalLockManager.readLockPage(xid, pageid); }
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return loadPageImpl(xid, pageid, UNKNOWN_TYPE_PAGE);
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stasis_buffer_manager_t * bm = stasis_runtime_buffer_manager();
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return bm->loadPageImpl(bm, xid, pageid, UNKNOWN_TYPE_PAGE);
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}
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Page * loadPageOfType(int xid, pageid_t pageid, pagetype_t type) {
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if(globalLockManager.readLockPage) { globalLockManager.readLockPage(xid, pageid); }
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return loadPageImpl(xid, pageid, type);
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stasis_buffer_manager_t * bm = stasis_runtime_buffer_manager();
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return bm->loadPageImpl(bm, xid, pageid, type);
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}
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Page * loadUninitializedPage(int xid, pageid_t pageid) {
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// This lock is released at Tcommit()
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if(globalLockManager.readLockPage) { globalLockManager.readLockPage(xid, pageid); }
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return loadUninitPageImpl(xid, pageid);
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stasis_buffer_manager_t * bm = stasis_runtime_buffer_manager();
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return bm->loadUninitPageImpl(bm, xid, pageid);
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}
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Page * loadPageForOperation(int xid, pageid_t pageid, int op) {
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@ -200,31 +184,10 @@ Page * loadPageForOperation(int xid, pageid_t pageid, int op) {
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}
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Page * getCachedPage(int xid, pageid_t pageid) {
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return getCachedPageImpl(xid, pageid);
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stasis_buffer_manager_t * bm = stasis_runtime_buffer_manager();
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return bm->getCachedPageImpl(bm, xid, pageid);
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}
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void releasePage(Page * p) {
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releasePageImpl(p);
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}
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int stasis_buffer_manager_open(int type, stasis_page_handle_t * ph) {
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bufferManagerType = type;
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static int lastType = 0;
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if(type == BUFFER_MANAGER_REOPEN) {
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type = lastType;
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}
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lastType = type;
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if(type == BUFFER_MANAGER_DEPRECATED_HASH) {
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stasis_buffer_manager_deprecated_open(ph);
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return 0;
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} else if (type == BUFFER_MANAGER_MEM_ARRAY) {
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stasis_buffer_manager_mem_array_open();
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ph->close(ph); // XXX should never have been opened in the first place!
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return 0;
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} else if (type == BUFFER_MANAGER_HASH) {
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stasis_buffer_manager_hash_open(ph);
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return 0;
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} else {
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// XXX error handling
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abort();
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}
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stasis_buffer_manager_t * bm = stasis_runtime_buffer_manager();
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bm->releasePageImpl(bm, p);
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}
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@ -15,19 +15,17 @@
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#include <stasis/bufferPool.h>
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#include <stasis/doubleLinkedList.h>
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#include <stasis/pageHandle.h>
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#include <stasis/dirtyPageTable.h>
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#include <stasis/transactional.h>
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#include <stasis/replacementPolicy.h>
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#include <stasis/bufferManager.h>
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#include <stasis/page.h>
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#include <assert.h>
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#include <stdio.h>
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//#define LATCH_SANITY_CHECKING
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struct stasis_buffer_hash_t {
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typedef struct {
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struct LH_ENTRY(table) * cachedPages;
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pthread_t worker;
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pthread_mutex_t mut;
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@ -36,30 +34,10 @@ struct stasis_buffer_hash_t {
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pageid_t pageCount;
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replacementPolicy *lru;
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stasis_buffer_pool_t *buffer_pool;
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stasis_page_handle_t *page_handler;
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stasis_page_handle_t *page_handle;
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int flushing;
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int running;
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};
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static struct LH_ENTRY(table) * cachedPages;
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static pthread_t worker;
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static pthread_mutex_t mut = PTHREAD_MUTEX_INITIALIZER;
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static pthread_cond_t readComplete = PTHREAD_COND_INITIALIZER;
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static pthread_cond_t needFree = PTHREAD_COND_INITIALIZER;
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static pageid_t pageCount;
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// A page is in LRU iff !pending, !pinned
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static replacementPolicy * lru;
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static stasis_buffer_pool_t * stasis_buffer_pool;
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static stasis_page_handle_t * page_handle;
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static int flushing;
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static int running;
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} stasis_buffer_hash_t;
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typedef struct LL_ENTRY(node_t) node_t;
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@ -79,6 +57,7 @@ static inline intptr_t* pagePinCountPtr(Page * p) {
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return ((intptr_t*)(&((p)->queue)));
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}
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static inline int needFlush() {
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// XXX need to remove call to stasis_runtime*
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pageid_t count = stasis_dirty_page_table_dirty_count(stasis_runtime_dirty_page_table());
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const pageid_t needed = 1000; //MAX_BUFFER_SIZE / 5;
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if(count > needed) {
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@ -121,9 +100,9 @@ inline static void checkPageState(Page * p) { }
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#endif
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inline static int tryToWriteBackPage(pageid_t page) {
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Page * p = LH_ENTRY(find)(cachedPages, &page, sizeof(page));
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inline static int tryToWriteBackPage(stasis_buffer_manager_t *bm, pageid_t page) {
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stasis_buffer_hash_t * bh = bm->impl;
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Page * p = LH_ENTRY(find)(bh->cachedPages, &page, sizeof(page));
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if(!p) { return ENOENT; }
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@ -133,29 +112,25 @@ inline static int tryToWriteBackPage(pageid_t page) {
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return EBUSY;
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}
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DEBUG("Write(%ld)\n", (long)victim->id);
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page_handle->write(page_handle, p); /// XXX pageCleanup and pageFlushed might be heavyweight.
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// int locked = trywritelock(p->rwlatch,0);
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// assert(locked);
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// assert(!stasis_dirty_page_table_is_dirty(stasis_runtime_dirty_page_table(), p));
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// unlock(p->rwlatch);
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bh->page_handle->write(bh->page_handle, p); /// XXX pageCleanup and pageFlushed might be heavyweight.
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return 0;
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}
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/** Returns a free page. The page will not be in freeList,
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cachedPages or lru. */
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inline static Page * getFreePage() {
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inline static Page * getFreePage(stasis_buffer_manager_t *bm) {
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stasis_buffer_hash_t * bh = bm->impl;
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Page * ret;
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if(pageCount < MAX_BUFFER_SIZE) {
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ret = stasis_buffer_pool_malloc_page(stasis_buffer_pool);
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stasis_buffer_pool_free_page(stasis_buffer_pool, ret,-1);
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if(bh->pageCount < MAX_BUFFER_SIZE) {
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ret = stasis_buffer_pool_malloc_page(bh->buffer_pool);
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stasis_buffer_pool_free_page(bh->buffer_pool, ret,-1);
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(*pagePinCountPtr(ret)) = 0;
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(*pagePendingPtr(ret)) = 0;
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pageSetNode(ret,0,0);
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pageCount++;
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bh->pageCount++;
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} else {
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while((ret = lru->getStale(lru))) {
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while((ret = bh->lru->getStale(bh->lru))) {
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// Make sure we have an exclusive lock on victim.
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if(!ret) {
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printf("bufferHash.c: Cannot find free page for application request.\nbufferHash.c: This should not happen unless all pages have been pinned.\nbufferHash.c: Crashing.");
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@ -164,19 +139,19 @@ inline static Page * getFreePage() {
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assert(!*pagePinCountPtr(ret));
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assert(!*pagePendingPtr(ret));
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if(ret->dirty) {
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pthread_mutex_unlock(&mut);
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pthread_mutex_unlock(&bh->mut);
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DEBUG("Blocking app thread");
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// We don't really care if this flush happens, so long as *something* is being written back, so ignore the EAGAIN it could return.
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// (Besides, once this returns EAGAIN twice, we know that some other flush concurrently was initiated + returned, so we're good to go...)
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stasis_dirty_page_table_flush(stasis_runtime_dirty_page_table());
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pthread_mutex_lock(&mut);
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pthread_mutex_lock(&bh->mut);
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} else {
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break;
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}
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}
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lru->remove(lru, ret);
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Page * check = LH_ENTRY(remove)(cachedPages, &ret->id, sizeof(ret->id));
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bh->lru->remove(bh->lru, ret);
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Page * check = LH_ENTRY(remove)(bh->cachedPages, &ret->id, sizeof(ret->id));
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assert(check == ret);
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}
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assert(!*pagePinCountPtr(ret));
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@ -186,31 +161,34 @@ inline static Page * getFreePage() {
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return ret;
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}
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static void * writeBackWorker(void * ignored) {
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pthread_mutex_lock(&mut);
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static void * writeBackWorker(void * bmp) {
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stasis_buffer_manager_t* bm = bmp;
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stasis_buffer_hash_t * bh = bm->impl;
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pthread_mutex_lock(&bh->mut);
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while(1) {
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while(running && (!needFlush())) {
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flushing = 0;
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while(bh->running && (!needFlush())) {
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bh->flushing = 0;
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DEBUG("Sleeping in write back worker (count = %lld)\n", stasis_dirty_page_table_dirty_count(stasis_runtime_dirty_page_table()));
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pthread_cond_wait(&needFree, &mut);
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pthread_cond_wait(&bh->needFree, &bh->mut);
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DEBUG("Woke write back worker (count = %lld)\n", stasis_dirty_page_table_dirty_count(stasis_runtime_dirty_page_table()));
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flushing = 1;
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bh->flushing = 1;
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}
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if(!running) { break; }
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pthread_mutex_unlock(&mut);
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if(!bh->running) { break; }
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pthread_mutex_unlock(&bh->mut);
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DEBUG("Calling flush\n");
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// ignore ret val; this flush is for performance, not correctness.
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stasis_dirty_page_table_flush(stasis_runtime_dirty_page_table());
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pthread_mutex_lock(&mut);
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stasis_dirty_page_table_flush(stasis_runtime_dirty_page_table()); // XXX no call to stasis_runtime_*
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pthread_mutex_lock(&bh->mut);
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}
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pthread_mutex_unlock(&mut);
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pthread_mutex_unlock(&bh->mut);
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return 0;
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}
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static Page * bhGetCachedPage(int xid, const pageid_t pageid) {
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pthread_mutex_lock(&mut);
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static Page * bhGetCachedPage(stasis_buffer_manager_t* bm, int xid, const pageid_t pageid) {
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stasis_buffer_hash_t * bh = bm->impl;
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pthread_mutex_lock(&bh->mut);
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// Is the page in cache?
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Page * ret = LH_ENTRY(find)(cachedPages, &pageid, sizeof(pageid));
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Page * ret = LH_ENTRY(find)(bh->cachedPages, &pageid, sizeof(pageid));
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if(ret) {
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checkPageState(ret);
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#ifdef LATCH_SANITY_CHECKING
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@ -220,7 +198,7 @@ static Page * bhGetCachedPage(int xid, const pageid_t pageid) {
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if(!*pagePendingPtr(ret)) {
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if(!*pagePinCountPtr(ret) ) {
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// Then ret is in lru (otherwise it would be pending, or not cached); remove it.
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lru->remove(lru, ret);
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bh->lru->remove(bh->lru, ret);
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}
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(*pagePinCountPtr(ret))++;
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checkPageState(ret);
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@ -229,11 +207,12 @@ static Page * bhGetCachedPage(int xid, const pageid_t pageid) {
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ret = 0;
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}
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}
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pthread_mutex_unlock(&mut);
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pthread_mutex_unlock(&bh->mut);
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return ret;
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}
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static Page * bhLoadPageImpl_helper(int xid, const pageid_t pageid, int uninitialized, pagetype_t type) {
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static Page * bhLoadPageImpl_helper(stasis_buffer_manager_t* bm, int xid, const pageid_t pageid, int uninitialized, pagetype_t type) {
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stasis_buffer_hash_t * bh = bm->impl;
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// Note: Calls to loadlatch in this function violate lock order, but
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// should be safe, since we make sure no one can have a writelock
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@ -241,10 +220,10 @@ static Page * bhLoadPageImpl_helper(int xid, const pageid_t pageid, int uninitia
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void* check;
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pthread_mutex_lock(&mut);
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pthread_mutex_lock(&bh->mut);
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// Is the page in cache?
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Page * ret = LH_ENTRY(find)(cachedPages, &pageid,sizeof(pageid));
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Page * ret = LH_ENTRY(find)(bh->cachedPages, &pageid,sizeof(pageid));
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do {
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@ -253,9 +232,9 @@ static Page * bhLoadPageImpl_helper(int xid, const pageid_t pageid, int uninitia
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while(ret) {
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checkPageState(ret);
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if(*pagePendingPtr(ret)) {
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pthread_cond_wait(&readComplete, &mut);
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pthread_cond_wait(&bh->readComplete, &bh->mut);
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if(ret->id != pageid) {
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ret = LH_ENTRY(find)(cachedPages, &pageid, sizeof(pageid));
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ret = LH_ENTRY(find)(bh->cachedPages, &pageid, sizeof(pageid));
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}
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} else {
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#ifdef LATCH_SANITY_CHECKING
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@ -264,11 +243,11 @@ static Page * bhLoadPageImpl_helper(int xid, const pageid_t pageid, int uninitia
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#endif
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if(! *pagePinCountPtr(ret) ) {
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// Then ret is in lru (otherwise it would be pending, or not cached); remove it.
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lru->remove(lru, ret);
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bh->lru->remove(bh->lru, ret);
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}
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(*pagePinCountPtr(ret))++;
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checkPageState(ret);
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pthread_mutex_unlock(&mut);
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pthread_mutex_unlock(&bh->mut);
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assert(ret->id == pageid);
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return ret;
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}
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@ -278,10 +257,10 @@ static Page * bhLoadPageImpl_helper(int xid, const pageid_t pageid, int uninitia
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assert(!ret);
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// Remove a page from the freelist. This may cause writeback, and release our latch.
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Page * ret2 = getFreePage();
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Page * ret2 = getFreePage(bm);
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// Did some other thread put the page in cache for us?
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ret = LH_ENTRY(find)(cachedPages, &pageid,sizeof(pageid));
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ret = LH_ENTRY(find)(bh->cachedPages, &pageid,sizeof(pageid));
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if(!ret) {
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@ -295,8 +274,8 @@ static Page * bhLoadPageImpl_helper(int xid, const pageid_t pageid, int uninitia
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break;
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} else {
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// Put the page we were about to evict back in cached pages
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LH_ENTRY(insert)(cachedPages, &ret2->id, sizeof(ret2->id), ret2);
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lru->insert(lru, ret2);
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LH_ENTRY(insert)(bh->cachedPages, &ret2->id, sizeof(ret2->id), ret2);
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bh->lru->insert(bh->lru, ret2);
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// On the next loop iteration, we'll probably return the page the other thread inserted for us.
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}
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// try again.
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@ -305,7 +284,7 @@ static Page * bhLoadPageImpl_helper(int xid, const pageid_t pageid, int uninitia
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// Add a pending entry to cachedPages to block like-minded threads and writeback
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(*pagePendingPtr(ret)) = (void*)1;
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check = LH_ENTRY(insert)(cachedPages,&pageid,sizeof(pageid), ret);
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check = LH_ENTRY(insert)(bh->cachedPages,&pageid,sizeof(pageid), ret);
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assert(!check);
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ret->id = pageid;
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@ -314,11 +293,11 @@ static Page * bhLoadPageImpl_helper(int xid, const pageid_t pageid, int uninitia
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// Now, it is safe to release the mutex; other threads won't
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// try to read this page from disk.
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pthread_mutex_unlock(&mut);
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pthread_mutex_unlock(&bh->mut);
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page_handle->read(page_handle, ret, type);
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bh->page_handle->read(bh->page_handle, ret, type);
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pthread_mutex_lock(&mut);
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pthread_mutex_lock(&bh->mut);
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} else {
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memset(ret->memAddr,0,PAGE_SIZE);
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@ -340,58 +319,63 @@ static Page * bhLoadPageImpl_helper(int xid, const pageid_t pageid, int uninitia
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assert(locked);
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#endif
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pthread_mutex_unlock(&mut);
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pthread_cond_broadcast(&readComplete);
|
||||
pthread_mutex_unlock(&bh->mut);
|
||||
pthread_cond_broadcast(&bh->readComplete);
|
||||
|
||||
// TODO Improve writeback policy
|
||||
if((!flushing) && needFlush()) {
|
||||
pthread_cond_signal(&needFree);
|
||||
if((!bh->flushing) && needFlush()) {
|
||||
pthread_cond_signal(&bh->needFree);
|
||||
}
|
||||
assert(ret->id == pageid);
|
||||
checkPageState (ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static Page * bhLoadPageImpl(int xid, const pageid_t pageid, pagetype_t type) {
|
||||
return bhLoadPageImpl_helper(xid,pageid,0, type);
|
||||
static Page * bhLoadPageImpl(stasis_buffer_manager_t *bm, int xid, const pageid_t pageid, pagetype_t type) {
|
||||
return bhLoadPageImpl_helper(bm, xid, pageid, 0, type);
|
||||
}
|
||||
static Page * bhLoadUninitPageImpl(int xid, const pageid_t pageid) {
|
||||
return bhLoadPageImpl_helper(xid,pageid,1,UNKNOWN_TYPE_PAGE); // 1 means dont care about preimage of page.
|
||||
static Page * bhLoadUninitPageImpl(stasis_buffer_manager_t *bm, int xid, const pageid_t pageid) {
|
||||
return bhLoadPageImpl_helper(bm, xid,pageid,1,UNKNOWN_TYPE_PAGE); // 1 means dont care about preimage of page.
|
||||
}
|
||||
|
||||
|
||||
static void bhReleasePage(Page * p) {
|
||||
pthread_mutex_lock(&mut);
|
||||
static void bhReleasePage(stasis_buffer_manager_t * bm, Page * p) {
|
||||
stasis_buffer_hash_t * bh = bm->impl;
|
||||
pthread_mutex_lock(&bh->mut);
|
||||
checkPageState(p);
|
||||
(*pagePinCountPtr(p))--;
|
||||
if(!(*pagePinCountPtr(p))) {
|
||||
assert(!pageGetNode(p, 0));
|
||||
lru->insert(lru,p);
|
||||
bh->lru->insert(bh->lru,p);
|
||||
}
|
||||
#ifdef LATCH_SANITY_CHECKING
|
||||
unlock(p->loadlatch);
|
||||
#endif
|
||||
pthread_mutex_unlock(&mut);
|
||||
pthread_mutex_unlock(&bh->mut);
|
||||
}
|
||||
static int bhWriteBackPage(pageid_t pageid) {
|
||||
pthread_mutex_lock(&mut);
|
||||
int ret = tryToWriteBackPage(pageid);
|
||||
pthread_mutex_unlock(&mut);
|
||||
static int bhWriteBackPage(stasis_buffer_manager_t* bm, pageid_t pageid) {
|
||||
stasis_buffer_hash_t * bh = bm->impl;
|
||||
pthread_mutex_lock(&bh->mut);
|
||||
int ret = tryToWriteBackPage(bm, pageid);
|
||||
pthread_mutex_unlock(&bh->mut);
|
||||
return ret;
|
||||
}
|
||||
static void bhForcePages() {
|
||||
page_handle->force_file(page_handle);
|
||||
static void bhForcePages(stasis_buffer_manager_t* bm) {
|
||||
stasis_buffer_hash_t * bh = bm->impl;
|
||||
bh->page_handle->force_file(bh->page_handle);
|
||||
}
|
||||
static void bhForcePageRange(pageid_t start, pageid_t stop) {
|
||||
page_handle->force_range(page_handle, start, stop);
|
||||
static void bhForcePageRange(stasis_buffer_manager_t *bm, pageid_t start, pageid_t stop) {
|
||||
stasis_buffer_hash_t * bh = bm->impl;
|
||||
bh->page_handle->force_range(bh->page_handle, start, stop);
|
||||
}
|
||||
static void bhBufDeinit() {
|
||||
pthread_mutex_lock(&mut);
|
||||
running = 0;
|
||||
pthread_mutex_unlock(&mut);
|
||||
static void bhBufDeinit(stasis_buffer_manager_t * bm) {
|
||||
stasis_buffer_hash_t * bh = bm->impl;
|
||||
pthread_mutex_lock(&bh->mut);
|
||||
bh->running = 0;
|
||||
pthread_mutex_unlock(&bh->mut);
|
||||
|
||||
pthread_cond_signal(&needFree); // Wake up the writeback thread so it will exit.
|
||||
pthread_join(worker, 0);
|
||||
pthread_cond_signal(&bh->needFree); // Wake up the writeback thread so it will exit.
|
||||
pthread_join(bh->worker, 0);
|
||||
|
||||
// XXX flush range should return an error number, which we would check. (Right now, it aborts...)
|
||||
int ret = stasis_dirty_page_table_flush(stasis_runtime_dirty_page_table());
|
||||
|
|
@ -399,7 +383,7 @@ static void bhBufDeinit() {
|
|||
|
||||
struct LH_ENTRY(list) iter;
|
||||
const struct LH_ENTRY(pair_t) * next;
|
||||
LH_ENTRY(openlist)(cachedPages, &iter);
|
||||
LH_ENTRY(openlist)(bh->cachedPages, &iter);
|
||||
while((next = LH_ENTRY(readlist)(&iter))) {
|
||||
Page * p = next->value;
|
||||
assertunlocked(p->rwlatch);
|
||||
|
|
@ -410,23 +394,29 @@ static void bhBufDeinit() {
|
|||
stasis_page_cleanup(p); // normally called by writeBackOnePage()
|
||||
}
|
||||
LH_ENTRY(closelist)(&iter);
|
||||
LH_ENTRY(destroy)(cachedPages);
|
||||
LH_ENTRY(destroy)(bh->cachedPages);
|
||||
|
||||
lru->deinit(lru);
|
||||
stasis_buffer_pool_deinit(stasis_buffer_pool);
|
||||
page_handle->close(page_handle);
|
||||
bh->lru->deinit(bh->lru);
|
||||
stasis_buffer_pool_deinit(bh->buffer_pool);
|
||||
bh->page_handle->close(bh->page_handle);
|
||||
|
||||
pthread_mutex_destroy(&bh->mut);
|
||||
pthread_cond_destroy(&bh->needFree);
|
||||
pthread_cond_destroy(&bh->readComplete);
|
||||
free(bh);
|
||||
}
|
||||
static void bhSimulateBufferManagerCrash() {
|
||||
pthread_mutex_lock(&mut);
|
||||
running = 0;
|
||||
pthread_mutex_unlock(&mut);
|
||||
static void bhSimulateBufferManagerCrash(stasis_buffer_manager_t *bm) {
|
||||
stasis_buffer_hash_t * bh = bm->impl;
|
||||
pthread_mutex_lock(&bh->mut);
|
||||
bh->running = 0;
|
||||
pthread_mutex_unlock(&bh->mut);
|
||||
|
||||
pthread_cond_signal(&needFree);
|
||||
pthread_join(worker, 0);
|
||||
pthread_cond_signal(&bh->needFree);
|
||||
pthread_join(bh->worker, 0);
|
||||
|
||||
struct LH_ENTRY(list) iter;
|
||||
const struct LH_ENTRY(pair_t) * next;
|
||||
LH_ENTRY(openlist)(cachedPages, &iter);
|
||||
LH_ENTRY(openlist)(bh->cachedPages, &iter);
|
||||
while((next = LH_ENTRY(readlist)(&iter))) {
|
||||
Page * p = next->value;
|
||||
writelock(p->rwlatch,0);
|
||||
|
|
@ -435,42 +425,60 @@ static void bhSimulateBufferManagerCrash() {
|
|||
unlock(p->rwlatch);
|
||||
}
|
||||
LH_ENTRY(closelist)(&iter);
|
||||
LH_ENTRY(destroy)(cachedPages);
|
||||
LH_ENTRY(destroy)(bh->cachedPages);
|
||||
|
||||
lru->deinit(lru);
|
||||
stasis_buffer_pool_deinit(stasis_buffer_pool);
|
||||
page_handle->close(page_handle);
|
||||
bh->lru->deinit(bh->lru);
|
||||
stasis_buffer_pool_deinit(bh->buffer_pool);
|
||||
bh->page_handle->close(bh->page_handle);
|
||||
|
||||
pthread_mutex_destroy(&bh->mut);
|
||||
pthread_cond_destroy(&bh->needFree);
|
||||
pthread_cond_destroy(&bh->readComplete);
|
||||
free(bh);
|
||||
}
|
||||
|
||||
void stasis_buffer_manager_hash_open(stasis_page_handle_t * h) {
|
||||
page_handle = h;
|
||||
assert(!running);
|
||||
stasis_buffer_manager_t* stasis_buffer_manager_hash_open(stasis_page_handle_t * h) {
|
||||
stasis_buffer_manager_t *bm = malloc(sizeof(*bm));
|
||||
stasis_buffer_hash_t *bh = malloc(sizeof(*bh));
|
||||
|
||||
bm->loadPageImpl = bhLoadPageImpl;
|
||||
bm->loadUninitPageImpl = bhLoadUninitPageImpl;
|
||||
bm->getCachedPageImpl = bhGetCachedPage;
|
||||
bm->releasePageImpl = bhReleasePage;
|
||||
bm->writeBackPage = bhWriteBackPage;
|
||||
bm->forcePages = bhForcePages;
|
||||
bm->forcePageRange = bhForcePageRange;
|
||||
bm->stasis_buffer_manager_close = bhBufDeinit;
|
||||
bm->stasis_buffer_manager_simulate_crash = bhSimulateBufferManagerCrash;
|
||||
|
||||
bm->impl = bh;
|
||||
|
||||
bh->page_handle = h;
|
||||
bh->running = 0;
|
||||
|
||||
#ifdef LONG_RUN
|
||||
printf("Using expensive bufferHash sanity checking.\n");
|
||||
#endif
|
||||
|
||||
loadPageImpl = bhLoadPageImpl;
|
||||
loadUninitPageImpl = bhLoadUninitPageImpl;
|
||||
getCachedPageImpl = bhGetCachedPage;
|
||||
releasePageImpl = bhReleasePage;
|
||||
writeBackPage = bhWriteBackPage;
|
||||
forcePages = bhForcePages;
|
||||
forcePageRange = bhForcePageRange;
|
||||
stasis_buffer_manager_close = bhBufDeinit;
|
||||
stasis_buffer_manager_simulate_crash = bhSimulateBufferManagerCrash;
|
||||
bh->flushing = 0;
|
||||
|
||||
flushing = 0;
|
||||
bh->buffer_pool = stasis_buffer_pool_init();
|
||||
|
||||
stasis_buffer_pool = stasis_buffer_pool_init();
|
||||
bh->lru = lruFastInit(pageGetNode, pageSetNode, 0);
|
||||
|
||||
lru = lruFastInit(pageGetNode, pageSetNode, 0);
|
||||
bh->cachedPages = LH_ENTRY(create)(MAX_BUFFER_SIZE);
|
||||
|
||||
cachedPages = LH_ENTRY(create)(MAX_BUFFER_SIZE);
|
||||
bh->pageCount = 0;
|
||||
|
||||
pageCount = 0;
|
||||
bh->running = 1;
|
||||
|
||||
running = 1;
|
||||
pthread_mutex_init(&bh->mut,0);
|
||||
|
||||
pthread_create(&worker, 0, writeBackWorker, 0);
|
||||
pthread_cond_init(&bh->needFree,0);
|
||||
|
||||
pthread_cond_init(&bh->readComplete,0);
|
||||
|
||||
pthread_create(&bh->worker, 0, writeBackWorker, bm);
|
||||
|
||||
return bm;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1,6 +1,5 @@
|
|||
#include <stasis/common.h>
|
||||
|
||||
#include <stasis/bufferManager.h>
|
||||
#include <stasis/pageHandle.h>
|
||||
#include <stasis/bufferPool.h>
|
||||
#include <stasis/bufferManager/legacy/pageFile.h>
|
||||
|
|
@ -21,17 +20,17 @@ static pthread_key_t lastPage;
|
|||
#define RW 1
|
||||
|
||||
static void bufManBufDeinit();
|
||||
static compensated_function Page *bufManLoadPage(int xid, pageid_t pageid, pagetype_t type);
|
||||
static compensated_function Page *bufManGetCachedPage(int xid, pageid_t pageid);
|
||||
static compensated_function Page *bufManLoadUninitPage(int xid, pageid_t pageid);
|
||||
static void bufManReleasePage (Page * p);
|
||||
static compensated_function Page *bufManLoadPage(stasis_buffer_manager_t *ignored, int xid, pageid_t pageid, pagetype_t type);
|
||||
static compensated_function Page *bufManGetCachedPage(stasis_buffer_manager_t *ignored, int xid, pageid_t pageid);
|
||||
static compensated_function Page *bufManLoadUninitPage(stasis_buffer_manager_t *ignored, int xid, pageid_t pageid);
|
||||
static void bufManReleasePage (stasis_buffer_manager_t *ignored, Page * p);
|
||||
static void bufManSimulateBufferManagerCrash();
|
||||
|
||||
static stasis_page_handle_t * page_handle;
|
||||
|
||||
static stasis_buffer_pool_t * stasis_buffer_pool;
|
||||
|
||||
static int pageWrite_legacyWrapper(pageid_t pageid) {
|
||||
static int pageWrite_legacyWrapper(stasis_buffer_manager_t *ignored, pageid_t pageid) {
|
||||
Page * p = loadPage(-1, pageid);
|
||||
// XXX this is unsafe; the page could be pinned!
|
||||
page_handle->write(page_handle,p);
|
||||
|
|
@ -41,21 +40,22 @@ static int pageWrite_legacyWrapper(pageid_t pageid) {
|
|||
static void forcePageFile_legacyWrapper() {
|
||||
page_handle->force_file(page_handle);
|
||||
}
|
||||
static void forceRangePageFile_legacyWrapper(lsn_t start, lsn_t stop) {
|
||||
static void forceRangePageFile_legacyWrapper(stasis_buffer_manager_t *ignored, lsn_t start, lsn_t stop) {
|
||||
page_handle->force_range(page_handle, start, stop);
|
||||
}
|
||||
|
||||
int stasis_buffer_manager_deprecated_open(stasis_page_handle_t * ph) {
|
||||
stasis_buffer_manager_t* stasis_buffer_manager_deprecated_open(stasis_page_handle_t * ph) {
|
||||
page_handle = ph;
|
||||
releasePageImpl = bufManReleasePage;
|
||||
loadPageImpl = bufManLoadPage;
|
||||
loadUninitPageImpl = bufManLoadUninitPage;
|
||||
getCachedPageImpl = bufManGetCachedPage;
|
||||
writeBackPage = pageWrite_legacyWrapper;
|
||||
forcePages = forcePageFile_legacyWrapper;
|
||||
forcePageRange = forceRangePageFile_legacyWrapper;
|
||||
stasis_buffer_manager_close = bufManBufDeinit;
|
||||
stasis_buffer_manager_simulate_crash = bufManSimulateBufferManagerCrash;
|
||||
stasis_buffer_manager_t * bm = malloc(sizeof(*bm));
|
||||
bm->releasePageImpl = bufManReleasePage;
|
||||
bm->loadPageImpl = bufManLoadPage;
|
||||
bm->loadUninitPageImpl = bufManLoadUninitPage;
|
||||
bm->getCachedPageImpl = bufManGetCachedPage;
|
||||
bm->writeBackPage = pageWrite_legacyWrapper;
|
||||
bm->forcePages = forcePageFile_legacyWrapper;
|
||||
bm->forcePageRange = forceRangePageFile_legacyWrapper;
|
||||
bm->stasis_buffer_manager_close = bufManBufDeinit;
|
||||
bm->stasis_buffer_manager_simulate_crash = bufManSimulateBufferManagerCrash;
|
||||
|
||||
stasis_buffer_pool = stasis_buffer_pool_init();
|
||||
|
||||
|
|
@ -80,7 +80,8 @@ int stasis_buffer_manager_deprecated_open(stasis_page_handle_t * ph) {
|
|||
profile_load_hash = LH_ENTRY(create)(10);
|
||||
profile_load_pins_hash = LH_ENTRY(create)(10);
|
||||
#endif
|
||||
return 0;
|
||||
bm->impl = 0; // XXX hack, but this module is deprecated
|
||||
return bm;
|
||||
}
|
||||
|
||||
static void bufManBufDeinit() {
|
||||
|
|
@ -126,7 +127,7 @@ static void bufManSimulateBufferManagerCrash() {
|
|||
#endif
|
||||
}
|
||||
|
||||
static void bufManReleasePage (Page * p) {
|
||||
static void bufManReleasePage (stasis_buffer_manager_t *ignored, Page * p) {
|
||||
unlock(p->loadlatch);
|
||||
#ifdef PIN_COUNT
|
||||
pthread_mutex_lock(&pinCount_mutex);
|
||||
|
|
@ -340,7 +341,7 @@ static Page* bufManGetPage(pageid_t pageid, int locktype, int uninitialized, pag
|
|||
return ret;
|
||||
}
|
||||
|
||||
static compensated_function Page *bufManLoadPage(int xid, const pageid_t pageid, pagetype_t type) {
|
||||
static compensated_function Page *bufManLoadPage(stasis_buffer_manager_t *ignored, int xid, const pageid_t pageid, pagetype_t type) {
|
||||
|
||||
Page * ret = pthread_getspecific(lastPage);
|
||||
|
||||
|
|
@ -371,12 +372,12 @@ static compensated_function Page *bufManLoadPage(int xid, const pageid_t pageid,
|
|||
return ret;
|
||||
}
|
||||
|
||||
static Page* bufManGetCachedPage(int xid, const pageid_t pageid) {
|
||||
static Page* bufManGetCachedPage(stasis_buffer_manager_t *ignored, int xid, const pageid_t pageid) {
|
||||
// XXX hack; but this code is deprecated
|
||||
return bufManLoadPage(xid, pageid, UNKNOWN_TYPE_PAGE);
|
||||
return bufManLoadPage(ignored, xid, pageid, UNKNOWN_TYPE_PAGE);
|
||||
}
|
||||
|
||||
static compensated_function Page *bufManLoadUninitPage(int xid, pageid_t pageid) {
|
||||
static compensated_function Page *bufManLoadUninitPage(stasis_buffer_manager_t *ignored, int xid, pageid_t pageid) {
|
||||
|
||||
Page * ret = pthread_getspecific(lastPage);
|
||||
|
||||
|
|
|
|||
|
|
@ -1,79 +1,93 @@
|
|||
#include <stasis/transactional.h>
|
||||
#include <stasis/bufferManager.h>
|
||||
#include <stasis/bufferPool.h>
|
||||
#include <stasis/truncation.h>
|
||||
#include <stasis/latches.h>
|
||||
#include <stasis/bufferManager/pageArray.h>
|
||||
#include <stasis/page.h>
|
||||
|
||||
static Page ** pageMap;
|
||||
static pageid_t pageCount;
|
||||
static pthread_mutex_t pageArray_mut = PTHREAD_MUTEX_INITIALIZER;
|
||||
typedef struct {
|
||||
Page ** pageMap;
|
||||
pageid_t pageCount;
|
||||
pthread_mutex_t mut;
|
||||
} stasis_buffer_manager_page_array_t;
|
||||
|
||||
static Page * paLoadPage(int xid, pageid_t pageid, pagetype_t type) {
|
||||
|
||||
pthread_mutex_lock(&pageArray_mut);
|
||||
if(pageid >= pageCount) {
|
||||
pageMap = realloc(pageMap, (1+pageid) * sizeof(Page*));
|
||||
for(pageid_t i = pageCount; i <= pageid; i++) {
|
||||
pageMap[i] = 0;
|
||||
static Page * paLoadPage(stasis_buffer_manager_t *bm, int xid, pageid_t pageid, pagetype_t type) {
|
||||
stasis_buffer_manager_page_array_t *pa = bm->impl;
|
||||
pthread_mutex_lock(&pa->mut);
|
||||
if(pageid >= pa->pageCount) {
|
||||
pa->pageMap = realloc(pa->pageMap, (1+pageid) * sizeof(Page*));
|
||||
for(pageid_t i = pa->pageCount; i <= pageid; i++) {
|
||||
pa->pageMap[i] = 0;
|
||||
}
|
||||
pageCount = pageid + 1;
|
||||
pa->pageCount = pageid + 1;
|
||||
}
|
||||
|
||||
if(!pageMap[pageid]) {
|
||||
pageMap[pageid] = malloc(sizeof(Page));
|
||||
pageMap[pageid]->id = pageid;
|
||||
pageMap[pageid]->pageType = type == UNKNOWN_TYPE_PAGE ? 0 : type;
|
||||
pageMap[pageid]->LSN = 0;
|
||||
pageMap[pageid]->dirty = 0;
|
||||
pageMap[pageid]->next = 0;
|
||||
pageMap[pageid]->prev = 0;
|
||||
pageMap[pageid]->queue = 0;
|
||||
pageMap[pageid]->inCache = 1;
|
||||
pageMap[pageid]->rwlatch = initlock();
|
||||
pageMap[pageid]->loadlatch = initlock();
|
||||
pageMap[pageid]->memAddr= calloc(PAGE_SIZE, sizeof(byte));
|
||||
if(!pa->pageMap[pageid]) {
|
||||
pa->pageMap[pageid] = malloc(sizeof(Page));
|
||||
pa->pageMap[pageid]->id = pageid;
|
||||
pa->pageMap[pageid]->pageType = type == UNKNOWN_TYPE_PAGE ? 0 : type;
|
||||
pa->pageMap[pageid]->LSN = 0;
|
||||
pa->pageMap[pageid]->dirty = 0;
|
||||
pa->pageMap[pageid]->next = 0;
|
||||
pa->pageMap[pageid]->prev = 0;
|
||||
pa->pageMap[pageid]->queue = 0;
|
||||
pa->pageMap[pageid]->inCache = 1;
|
||||
pa->pageMap[pageid]->rwlatch = initlock();
|
||||
pa->pageMap[pageid]->loadlatch = initlock();
|
||||
pa->pageMap[pageid]->memAddr= calloc(PAGE_SIZE, sizeof(byte));
|
||||
} else{
|
||||
if(type != UNKNOWN_TYPE_PAGE) { assert(type == pageMap[pageid]->pageType); }
|
||||
if(type != UNKNOWN_TYPE_PAGE) { assert(type == pa->pageMap[pageid]->pageType); }
|
||||
}
|
||||
pthread_mutex_unlock(&pageArray_mut);
|
||||
return pageMap[pageid];
|
||||
pthread_mutex_unlock(&pa->mut);
|
||||
return pa->pageMap[pageid];
|
||||
}
|
||||
static Page* paGetCachedPage(int xid, pageid_t page) {
|
||||
return paLoadPage(xid, page, UNKNOWN_TYPE_PAGE);
|
||||
static Page* paLoadUninitPage(stasis_buffer_manager_t *bm, int xid, pageid_t page) {
|
||||
return paLoadPage(bm, xid, page, UNKNOWN_TYPE_PAGE);
|
||||
}
|
||||
static void paReleasePage(Page * p) {
|
||||
static Page* paGetCachedPage(stasis_buffer_manager_t *bm, int xid, pageid_t page) {
|
||||
return paLoadPage(bm, xid, page, UNKNOWN_TYPE_PAGE);
|
||||
}
|
||||
static void paReleasePage(stasis_buffer_manager_t *bm, Page * p) {
|
||||
writelock(p->rwlatch,0);
|
||||
stasis_dirty_page_table_set_clean(stasis_runtime_dirty_page_table(), p);
|
||||
unlock(p->rwlatch);
|
||||
}
|
||||
|
||||
static int paWriteBackPage(pageid_t p) { return 0; /* no-op */ }
|
||||
static void paForcePages() { /* no-op */ }
|
||||
static void paForcePageRange(pageid_t start, pageid_t stop) { /* no-op */ }
|
||||
static int paWriteBackPage(stasis_buffer_manager_t *bm, pageid_t p) { return 0; /* no-op */ }
|
||||
static void paForcePages(stasis_buffer_manager_t * bm) { /* no-op */ }
|
||||
static void paForcePageRange(stasis_buffer_manager_t *bm, pageid_t start, pageid_t stop) { /* no-op */ }
|
||||
|
||||
static void paBufDeinit() {
|
||||
for(pageid_t i =0; i < pageCount; i++) {
|
||||
if(pageMap[i]) {
|
||||
deletelock(pageMap[i]->rwlatch);
|
||||
deletelock(pageMap[i]->loadlatch);
|
||||
free(pageMap[i]);
|
||||
static void paBufDeinit(stasis_buffer_manager_t * bm) {
|
||||
stasis_buffer_manager_page_array_t *pa = bm->impl;
|
||||
|
||||
for(pageid_t i =0; i < pa->pageCount; i++) {
|
||||
if(pa->pageMap[i]) {
|
||||
deletelock(pa->pageMap[i]->rwlatch);
|
||||
deletelock(pa->pageMap[i]->loadlatch);
|
||||
free(pa->pageMap[i]);
|
||||
}
|
||||
}
|
||||
pthread_mutex_destroy(&pa->mut);
|
||||
free(pa);
|
||||
}
|
||||
|
||||
void stasis_buffer_manager_mem_array_open () {
|
||||
stasis_buffer_manager_t * stasis_buffer_manager_mem_array_open () {
|
||||
|
||||
releasePageImpl = paReleasePage;
|
||||
loadPageImpl = paLoadPage;
|
||||
getCachedPageImpl = paGetCachedPage;
|
||||
writeBackPage = paWriteBackPage;
|
||||
forcePages = paForcePages;
|
||||
forcePageRange = paForcePageRange;
|
||||
stasis_buffer_manager_close = paBufDeinit;
|
||||
stasis_buffer_manager_simulate_crash = paBufDeinit;
|
||||
stasis_buffer_manager_t * bm = malloc(sizeof(*bm));
|
||||
stasis_buffer_manager_page_array_t * pa = malloc(sizeof(*pa));
|
||||
|
||||
pageCount = 0;
|
||||
pageMap = 0;
|
||||
bm->releasePageImpl = paReleasePage;
|
||||
bm->loadPageImpl = paLoadPage;
|
||||
bm->loadUninitPageImpl = paLoadUninitPage;
|
||||
bm->getCachedPageImpl = paGetCachedPage;
|
||||
bm->writeBackPage = paWriteBackPage;
|
||||
bm->forcePages = paForcePages;
|
||||
bm->forcePageRange = paForcePageRange;
|
||||
bm->stasis_buffer_manager_close = paBufDeinit;
|
||||
bm->stasis_buffer_manager_simulate_crash = paBufDeinit;
|
||||
bm->impl = pa;
|
||||
pa->pageCount = 0;
|
||||
pa->pageMap = 0;
|
||||
pthread_mutex_init(&pa->mut,0);
|
||||
return bm;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -10,7 +10,6 @@
|
|||
#include <stasis/flags.h>
|
||||
#include <stasis/dirtyPageTable.h>
|
||||
#include <stasis/page.h>
|
||||
#include <stasis/bufferManager.h>
|
||||
|
||||
#include <stdio.h>
|
||||
|
||||
|
|
@ -28,6 +27,7 @@ static int dpt_cmp(const void *ap, const void * bp, const void * ignored) {
|
|||
|
||||
struct stasis_dirty_page_table_t {
|
||||
struct rbtree * table;
|
||||
stasis_buffer_manager_t * bufferManager;
|
||||
pageid_t count;
|
||||
pthread_mutex_t mutex;
|
||||
pthread_cond_t flushDone;
|
||||
|
|
@ -131,7 +131,7 @@ int stasis_dirty_page_table_flush(stasis_dirty_page_table_t * dirtyPages) {
|
|||
if(off == stride) {
|
||||
pthread_mutex_unlock(&dirtyPages->mutex);
|
||||
for(pageid_t i = 0; i < off; i++) {
|
||||
writeBackPage(vals[i]);
|
||||
dirtyPages->bufferManager->writeBackPage(dirtyPages->bufferManager, vals[i]);
|
||||
}
|
||||
off = 0;
|
||||
strides++;
|
||||
|
|
@ -140,7 +140,7 @@ int stasis_dirty_page_table_flush(stasis_dirty_page_table_t * dirtyPages) {
|
|||
}
|
||||
pthread_mutex_unlock(&dirtyPages->mutex);
|
||||
for(int i = 0; i < off; i++) {
|
||||
writeBackPage(vals[i]);
|
||||
dirtyPages->bufferManager->writeBackPage(dirtyPages->bufferManager, vals[i]);
|
||||
}
|
||||
pthread_mutex_lock(&dirtyPages->mutex);
|
||||
dirtyPages->flushing = 0;
|
||||
|
|
@ -151,6 +151,30 @@ int stasis_dirty_page_table_flush(stasis_dirty_page_table_t * dirtyPages) {
|
|||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int stasis_dirty_page_table_get_flush_candidates(stasis_dirty_page_table_t * dirtyPages, pageid_t start, pageid_t stop, int count, pageid_t* range_starts, pageid_t* range_ends) {
|
||||
pthread_mutex_lock(&dirtyPages->mutex);
|
||||
int n = 0;
|
||||
int b = -1;
|
||||
dpt_entry dummy;
|
||||
dummy.lsn = -1;
|
||||
dummy.p = start;
|
||||
|
||||
for(const dpt_entry *e = rblookup(RB_LUGTEQ, &dummy, dirtyPages->table);
|
||||
e && (stop == 0 || e->p < stop) && n < count;
|
||||
e = rblookup(RB_LUGREAT, e, dirtyPages->table)) {
|
||||
if(n == 0 || range_ends[b] != e->p) {
|
||||
b++;
|
||||
range_starts[b] = e->p;
|
||||
range_ends[b] = e->p+1;
|
||||
} else {
|
||||
range_ends[b]++;
|
||||
}
|
||||
n++;
|
||||
}
|
||||
pthread_mutex_unlock(&dirtyPages->mutex);
|
||||
return b+1;
|
||||
}
|
||||
void stasis_dirty_page_table_flush_range(stasis_dirty_page_table_t * dirtyPages, pageid_t start, pageid_t stop) {
|
||||
|
||||
pthread_mutex_lock(&dirtyPages->mutex);
|
||||
|
|
@ -178,11 +202,14 @@ void stasis_dirty_page_table_flush_range(stasis_dirty_page_table_t * dirtyPages,
|
|||
pthread_mutex_unlock(&dirtyPages->mutex);
|
||||
|
||||
for(pageid_t i = 0; i < n; i++) {
|
||||
int err = writeBackPage(staleDirtyPages[i]);
|
||||
int err = dirtyPages->bufferManager->writeBackPage(dirtyPages->bufferManager, staleDirtyPages[i]);
|
||||
if(stop && (err == EBUSY)) { abort(); /*api violation!*/ }
|
||||
}
|
||||
free(staleDirtyPages);
|
||||
// forcePageRange(start*PAGE_SIZE,stop*PAGE_SIZE);
|
||||
}
|
||||
|
||||
void stasis_dirty_page_table_set_buffer_manager(stasis_dirty_page_table_t * dpt, stasis_buffer_manager_t *bufferManager) {
|
||||
dpt->bufferManager = bufferManager;
|
||||
}
|
||||
|
||||
stasis_dirty_page_table_t * stasis_dirty_page_table_init() {
|
||||
|
|
|
|||
|
|
@ -59,7 +59,8 @@ void TlsmRegionForceRid(int xid, void *conf) {
|
|||
pageid_t pid;
|
||||
Tread(xid,a.regionList,&pid);
|
||||
stasis_dirty_page_table_flush_range(stasis_runtime_dirty_page_table(), pid, pid+a.regionSize);
|
||||
forcePageRange(pid, pid+a.regionSize);
|
||||
stasis_buffer_manager_t *bm = stasis_runtime_buffer_manager();
|
||||
bm->forcePageRange(bm, pid, pid+a.regionSize);
|
||||
// TregionDealloc(xid,pid);
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -10,7 +10,9 @@
|
|||
|
||||
#include <stasis/bufferManager/legacy/pageFile.h>
|
||||
|
||||
|
||||
#include <stasis/bufferManager/pageArray.h>
|
||||
#include <stasis/bufferManager/bufferHash.h>
|
||||
#include <stasis/bufferManager/legacy/legacyBufferManager.h>
|
||||
|
||||
#include <stasis/logger/logger2.h>
|
||||
#include <stasis/logger/safeWrites.h>
|
||||
|
|
@ -34,6 +36,11 @@ stasis_dirty_page_table_t * stasis_dirty_page_table = 0;
|
|||
static stasis_truncation_t * stasis_truncation = 0;
|
||||
static stasis_alloc_t * stasis_alloc = 0;
|
||||
static stasis_allocation_policy_t * stasis_allocation_policy = 0;
|
||||
static stasis_buffer_manager_t * stasis_buffer_manager = 0;
|
||||
|
||||
void * stasis_runtime_buffer_manager() {
|
||||
return stasis_buffer_manager;
|
||||
}
|
||||
|
||||
/**
|
||||
This mutex protects stasis_transaction_table, numActiveXactions and
|
||||
|
|
@ -61,6 +68,27 @@ void * stasis_runtime_alloc_state() {
|
|||
return stasis_alloc;
|
||||
}
|
||||
|
||||
static stasis_buffer_manager_t* stasis_runtime_buffer_manager_open(int type, stasis_page_handle_t * ph) {
|
||||
bufferManagerType = type;
|
||||
static int lastType = 0;
|
||||
if(type == BUFFER_MANAGER_REOPEN) {
|
||||
type = lastType;
|
||||
}
|
||||
lastType = type;
|
||||
if(type == BUFFER_MANAGER_DEPRECATED_HASH) {
|
||||
return stasis_buffer_manager_deprecated_open(ph);
|
||||
} else if (type == BUFFER_MANAGER_MEM_ARRAY) {
|
||||
stasis_buffer_manager_t *ret = stasis_buffer_manager_mem_array_open();
|
||||
ph->close(ph); // XXX should never have been opened in the first place!
|
||||
return ret;
|
||||
} else if (type == BUFFER_MANAGER_HASH) {
|
||||
return stasis_buffer_manager_hash_open(ph);
|
||||
} else {
|
||||
// XXX error handling
|
||||
abort();
|
||||
}
|
||||
}
|
||||
|
||||
int Tinit() {
|
||||
pthread_mutex_init(&stasis_transaction_table_mutex, NULL);
|
||||
stasis_initted = 1;
|
||||
|
|
@ -99,8 +127,9 @@ int Tinit() {
|
|||
page_handle = stasis_page_handle_open(h, stasis_log_file, stasis_dirty_page_table);
|
||||
}
|
||||
|
||||
stasis_buffer_manager_open(bufferManagerType, page_handle);
|
||||
stasis_buffer_manager = stasis_runtime_buffer_manager_open(bufferManagerType, page_handle);
|
||||
DEBUG("Buffer manager type = %d\n", bufferManagerType);
|
||||
stasis_dirty_page_table_set_buffer_manager(stasis_dirty_page_table, stasis_buffer_manager); // xxx circular dependency.
|
||||
pageOperationsInit();
|
||||
stasis_allocation_policy = stasis_allocation_policy_init();
|
||||
stasis_alloc = stasis_alloc_init(stasis_allocation_policy);
|
||||
|
|
@ -114,7 +143,7 @@ int Tinit() {
|
|||
//setupLockManagerCallbacksPage();
|
||||
|
||||
stasis_recovery_initiate(stasis_log_file, stasis_alloc);
|
||||
stasis_truncation = stasis_truncation_init(stasis_dirty_page_table, stasis_log_file);
|
||||
stasis_truncation = stasis_truncation_init(stasis_dirty_page_table, stasis_buffer_manager, stasis_log_file);
|
||||
if(stasis_truncation_automatic) {
|
||||
// should this be before InitiateRecovery?
|
||||
stasis_truncation_thread_start(stasis_truncation);
|
||||
|
|
@ -365,7 +394,7 @@ int Tdeinit() {
|
|||
TnaiveHashDeinit();
|
||||
stasis_alloc_deinit(stasis_alloc);
|
||||
stasis_allocation_policy_deinit(stasis_allocation_policy);
|
||||
stasis_buffer_manager_close();
|
||||
stasis_buffer_manager->stasis_buffer_manager_close(stasis_buffer_manager);
|
||||
DEBUG("Closing page file tdeinit\n");
|
||||
stasis_page_deinit();
|
||||
stasis_log_group_force_t * group_force = stasis_log_file->group_force;
|
||||
|
|
@ -387,7 +416,7 @@ int TuncleanShutdown() {
|
|||
stasis_alloc_deinit(stasis_alloc);
|
||||
stasis_allocation_policy_deinit(stasis_allocation_policy);
|
||||
|
||||
stasis_buffer_manager_simulate_crash();
|
||||
stasis_buffer_manager->stasis_buffer_manager_simulate_crash(stasis_buffer_manager);
|
||||
// XXX: close_file?
|
||||
stasis_page_deinit();
|
||||
stasis_log_file->close(stasis_log_file);
|
||||
|
|
|
|||
|
|
@ -8,6 +8,7 @@ struct stasis_truncation_t {
|
|||
pthread_mutex_t shutdown_mutex;
|
||||
pthread_cond_t shutdown_cond;
|
||||
stasis_dirty_page_table_t * dirty_pages;
|
||||
stasis_buffer_manager_t * buffer_manager;
|
||||
stasis_log_t * log;
|
||||
};
|
||||
|
||||
|
|
@ -20,13 +21,14 @@ struct stasis_truncation_t {
|
|||
#define TRUNCATE_INTERVAL 1
|
||||
#define MIN_INCREMENTAL_TRUNCATION (1024 * 1024 * 25)
|
||||
#endif
|
||||
stasis_truncation_t * stasis_truncation_init(stasis_dirty_page_table_t * dpt, stasis_log_t * log) {
|
||||
stasis_truncation_t * stasis_truncation_init(stasis_dirty_page_table_t * dpt, stasis_buffer_manager_t *buffer_manager, stasis_log_t *log) {
|
||||
stasis_truncation_t * ret = malloc(sizeof(*ret));
|
||||
ret->initialized = 1;
|
||||
ret->automaticallyTruncating = 0;
|
||||
pthread_mutex_init(&ret->shutdown_mutex, 0);
|
||||
pthread_cond_init(&ret->shutdown_cond, 0);
|
||||
ret->dirty_pages = dpt;
|
||||
ret->buffer_manager = buffer_manager;
|
||||
ret->log = log;
|
||||
return ret;
|
||||
}
|
||||
|
|
@ -99,7 +101,7 @@ int stasis_truncation_truncate(stasis_truncation_t* trunc, int force) {
|
|||
if((rec_lsn - log_trunc) > MIN_INCREMENTAL_TRUNCATION) {
|
||||
// fprintf(stderr, "Truncating now. rec_lsn = %ld, log_trunc = %ld\n", rec_lsn, log_trunc);
|
||||
// fprintf(stderr, "Truncating to rec_lsn = %ld\n", rec_lsn);
|
||||
forcePages();
|
||||
trunc->buffer_manager->forcePages(trunc->buffer_manager);
|
||||
trunc->log->truncate(trunc->log, rec_lsn);
|
||||
return 1;
|
||||
} else {
|
||||
|
|
@ -116,7 +118,7 @@ int stasis_truncation_truncate(stasis_truncation_t* trunc, int force) {
|
|||
|
||||
//fprintf(stderr, "Flushed Dirty Buffers. Truncating to rec_lsn = %ld\n", rec_lsn);
|
||||
|
||||
forcePages();
|
||||
trunc->buffer_manager->forcePages(trunc->buffer_manager);
|
||||
trunc->log->truncate(trunc->log, rec_lsn);
|
||||
return 1;
|
||||
} else {
|
||||
|
|
|
|||
|
|
@ -80,7 +80,6 @@ terms specified in this license.
|
|||
#define __BUFFERMANAGER_H__
|
||||
#include <stasis/common.h>
|
||||
BEGIN_C_DECLS
|
||||
#include <stasis/pageHandle.h>
|
||||
/**
|
||||
* Obtain a pointer to a page from the buffer manager. The page will
|
||||
* be pinned, and the pointer valid until releasePage is called.
|
||||
|
|
@ -99,75 +98,64 @@ Page * loadUninitializedPage(int xid, pageid_t pageid);
|
|||
|
||||
Page * loadPageForOperation(int xid, pageid_t pageid, int op);
|
||||
|
||||
Page * getCachedPage(int xid, const pageid_t pageid);
|
||||
|
||||
/**
|
||||
This is the function pointer that stasis_buffer_manager_open sets in order to
|
||||
override loadPage.
|
||||
*/
|
||||
extern Page * (*loadPageImpl)(int xid, pageid_t pageid, pagetype_t type);
|
||||
extern Page * (*loadUninitPageImpl)(int xid, pageid_t pageid);
|
||||
/**
|
||||
Get a page from cache. This function should never block on I/O.
|
||||
|
||||
@return a pointer to the page, or NULL if the page is not in cache, or is being read from disk.
|
||||
*/
|
||||
extern Page * (*getCachedPageImpl)(int xid, const pageid_t pageid);
|
||||
Page * getCachedPage(int xid, const pageid_t pageid);
|
||||
|
||||
/**
|
||||
loadPage aquires a lock when it is called, effectively pinning it
|
||||
loadPage acquires a lock when it is called, effectively pinning it
|
||||
in memory. releasePage releases this lock.
|
||||
*/
|
||||
void releasePage(Page *p);
|
||||
|
||||
/**
|
||||
This is the function pointer that stasis_buffer_manager_open sets in order to
|
||||
override releasePage.
|
||||
*/
|
||||
extern void (*releasePageImpl)(Page * p);
|
||||
/**
|
||||
* initialize buffer manager
|
||||
* @return 0 on success
|
||||
* @return error code on failure
|
||||
*/
|
||||
/**
|
||||
This is used by truncation to move dirty pages from Stasis cache
|
||||
into the operating system cache. Once writeBackPage(p) returns,
|
||||
calling forcePages() will synchronously force page number p to
|
||||
disk.
|
||||
typedef struct stasis_buffer_manager_t stasis_buffer_manager_t;
|
||||
|
||||
(Not all buffer managers support synchronous writes to stable
|
||||
storage. For compatibility, such buffer managers should ignore
|
||||
this call.)
|
||||
struct stasis_buffer_manager_t {
|
||||
Page * (*loadPageImpl)(stasis_buffer_manager_t*, int xid, pageid_t pageid, pagetype_t type);
|
||||
Page * (*loadUninitPageImpl)(stasis_buffer_manager_t*, int xid, pageid_t pageid);
|
||||
Page * (*getCachedPageImpl)(stasis_buffer_manager_t*, int xid, const pageid_t pageid);
|
||||
void (*releasePageImpl)(stasis_buffer_manager_t*, Page * p);
|
||||
/**
|
||||
This is used by truncation to move dirty pages from Stasis cache
|
||||
into the operating system cache. Once writeBackPage(p) returns,
|
||||
calling forcePages() will synchronously force page number p to
|
||||
disk.
|
||||
|
||||
@return 0 on success, ENOENT if the page is not in cache, and EBUSY if the page is pinned.
|
||||
*/
|
||||
extern int (*writeBackPage)(pageid_t p);
|
||||
/**
|
||||
Force any written back pages to disk.
|
||||
(Not all buffer managers support synchronous writes to stable
|
||||
storage. For compatibility, such buffer managers should ignore
|
||||
this call.)
|
||||
|
||||
@see writeBackPage for more information.
|
||||
@return 0 on success, ENOENT if the page is not in cache, and EBUSY if the page is pinned.
|
||||
*/
|
||||
int (*writeBackPage)(stasis_buffer_manager_t*, pageid_t p);
|
||||
/**
|
||||
Force any written back pages to disk.
|
||||
|
||||
If the buffer manager doesn't support stable storage, this call is
|
||||
a no-op.
|
||||
*/
|
||||
extern void (*forcePages)();
|
||||
/**
|
||||
Force written back pages that fall within a particular range to disk.
|
||||
@see writeBackPage for more information.
|
||||
|
||||
This does not force page that have not been written to with pageWrite().
|
||||
If the buffer manager doesn't support stable storage, this call is
|
||||
a no-op.
|
||||
*/
|
||||
void (*forcePages)(struct stasis_buffer_manager_t*);
|
||||
/**
|
||||
Force written back pages that fall within a particular range to disk.
|
||||
|
||||
@param start the first pageid to be forced to disk
|
||||
@param stop the page after the last page to be forced to disk.
|
||||
*/
|
||||
extern void (*forcePageRange)(pageid_t start, pageid_t stop);
|
||||
extern void (*stasis_buffer_manager_simulate_crash)();
|
||||
This does not force page that have not been written to with pageWrite().
|
||||
|
||||
int stasis_buffer_manager_open(int type, stasis_page_handle_t * ph);
|
||||
/**
|
||||
* will write out any dirty pages, assumes that there are no running
|
||||
* transactions
|
||||
*/
|
||||
extern void (*stasis_buffer_manager_close)();
|
||||
@param start the first pageid to be forced to disk
|
||||
@param stop the page after the last page to be forced to disk.
|
||||
*/
|
||||
void (*forcePageRange)(struct stasis_buffer_manager_t*, pageid_t start, pageid_t stop);
|
||||
void (*stasis_buffer_manager_simulate_crash)(struct stasis_buffer_manager_t*);
|
||||
/**
|
||||
* Write out any dirty pages. Assumes that there are no running transactions
|
||||
*/
|
||||
void (*stasis_buffer_manager_close)(struct stasis_buffer_manager_t*);
|
||||
void * impl;
|
||||
};
|
||||
|
||||
#ifdef PROFILE_LATCHES_WRITE_ONLY
|
||||
#define loadPage(x,y) __profile_loadPage((x), (y), __FILE__, __LINE__)
|
||||
|
|
|
|||
|
|
@ -1,5 +1,6 @@
|
|||
#ifndef STASIS_BUFFERMANAGER_BUFFERHASH_H
|
||||
#define STASIS_BUFFERMANAGER_BUFFERHASH_H
|
||||
#include <stasis/bufferManager.h>
|
||||
#include <stasis/pageHandle.h>
|
||||
void stasis_buffer_manager_hash_open(stasis_page_handle_t* ph);
|
||||
stasis_buffer_manager_t* stasis_buffer_manager_hash_open(stasis_page_handle_t* ph);
|
||||
#endif //STASIS_BUFFERMANAGER_BUFFERHASH_H
|
||||
|
|
|
|||
|
|
@ -1,5 +1,5 @@
|
|||
#ifndef STASIS_BUFFERMANAGER_LEGACY_LEGACYBUFFERMANAGER_H
|
||||
#define STASIS_BUFFERMANAGER_LEGACY_LEGACYBUFFERMANAGER_H
|
||||
#include <stasis/pageHandle.h>
|
||||
int stasis_buffer_manager_deprecated_open(stasis_page_handle_t * ph);
|
||||
stasis_buffer_manager_t* stasis_buffer_manager_deprecated_open(stasis_page_handle_t * ph);
|
||||
#endif//STASIS_BUFFERMANAGER_LEGACY_LEGACYBUFFERMANAGER_H
|
||||
|
|
|
|||
|
|
@ -1 +1,2 @@
|
|||
void stasis_buffer_manager_mem_array_open();
|
||||
#include <stasis/bufferManager.h>
|
||||
stasis_buffer_manager_t* stasis_buffer_manager_mem_array_open();
|
||||
|
|
|
|||
|
|
@ -12,7 +12,10 @@ BEGIN_C_DECLS
|
|||
|
||||
typedef struct stasis_dirty_page_table_t stasis_dirty_page_table_t;
|
||||
|
||||
stasis_dirty_page_table_t * stasis_dirty_page_table_init();
|
||||
#include <stasis/bufferManager.h>
|
||||
stasis_dirty_page_table_t * stasis_dirty_page_table_init(void);
|
||||
// XXX circular dependency
|
||||
void stasis_dirty_page_table_set_buffer_manager(stasis_dirty_page_table_t* dpt, stasis_buffer_manager_t* bm);
|
||||
void stasis_dirty_page_table_deinit(stasis_dirty_page_table_t * dirtyPages);
|
||||
|
||||
void stasis_dirty_page_table_set_dirty(stasis_dirty_page_table_t * dirtyPages, Page * p);
|
||||
|
|
@ -24,6 +27,36 @@ pageid_t stasis_dirty_page_table_dirty_count(stasis_dirty_page_table_t * dirtyPa
|
|||
int stasis_dirty_page_table_flush(stasis_dirty_page_table_t * dirtyPages);
|
||||
lsn_t stasis_dirty_page_table_minRecLSN(stasis_dirty_page_table_t* dirtyPages);
|
||||
|
||||
/**
|
||||
This method returns a (mostly) contiguous range of the dirty page table for writeback.
|
||||
|
||||
Usage (to non-atomically flush all pages in a range, except ones that were dirtied while we were running)
|
||||
|
||||
int n = 100;
|
||||
pageid_t range_starts[n], pageid_t range_ends[n];
|
||||
|
||||
pageid_t next = start;
|
||||
|
||||
while((blocks = stasis_dirty_page_table_get_flush_candidates(dpt, next, stop, n, range_starts, range_ends) {
|
||||
for(int i = 0; i < blocks; i++) {
|
||||
for(pageid_t p = range_starts[i]; p < range_ends[i]; p++) {
|
||||
// flush p
|
||||
}
|
||||
}
|
||||
next = range_ends[blocks-1];;
|
||||
}
|
||||
|
||||
@param dirtyPages The dirty page table; this method will not change it.
|
||||
@param start The first page to be considered for writeback
|
||||
@param stop The page after the last page to be considered for writeback
|
||||
@param count The maximum number of pages to be returned for writeback
|
||||
@param range_starts An array of pageids of length count. Some number of these will be populated with the first page in a range to be written back.
|
||||
@param range_ends An array of the same length as range_starts. This will be populated with the page after the last page in each range.
|
||||
|
||||
@return The number of entries in range_starts and range_ends that were populated. This can be less than count even if there are more dirty pages in the range. If this is zero, then the entire range is clean.
|
||||
*/
|
||||
int stasis_dirty_page_table_get_flush_candidates(stasis_dirty_page_table_t * dirtyPages, pageid_t start, pageid_t stop, int count, pageid_t* range_starts, pageid_t* range_ends);
|
||||
|
||||
/**
|
||||
@todo flushRange's API sucks. It should be two functions, "startRangeFlush" and "waitRangeFlushes" or something.
|
||||
*/
|
||||
|
|
|
|||
|
|
@ -801,6 +801,8 @@ void * stasis_runtime_dirty_page_table();
|
|||
|
||||
void * stasis_runtime_alloc_state();
|
||||
|
||||
void * stasis_runtime_buffer_manager();
|
||||
|
||||
#include "operations.h"
|
||||
|
||||
END_C_DECLS
|
||||
|
|
|
|||
|
|
@ -64,8 +64,9 @@ typedef struct stasis_truncation_t stasis_truncation_t;
|
|||
|
||||
#include <stasis/logger/logger2.h>
|
||||
#include <stasis/dirtyPageTable.h>
|
||||
#include <stasis/bufferManager.h>
|
||||
|
||||
stasis_truncation_t * stasis_truncation_init(stasis_dirty_page_table_t * dpt, stasis_log_t * log);
|
||||
stasis_truncation_t * stasis_truncation_init(stasis_dirty_page_table_t * dpt, stasis_buffer_manager_t * bufferManager, stasis_log_t * log);
|
||||
void stasis_truncation_deinit(stasis_truncation_t * trunc);
|
||||
|
||||
/**
|
||||
|
|
|
|||
Loading…
Reference in a new issue