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more refactoring; removed static variables from pageHandle.c

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This commit is contained in:
Sears Russell 2009-05-08 04:56:34 +00:00
parent a0dd692b2c
commit 651a1a22e5
23 changed files with 264 additions and 222 deletions
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51
src/stasis/bufferManager.c
View file

@ -3,7 +3,7 @@ This software is copyrighted by the Regents of the University of
California, and other parties. The following terms apply to all files California, and other parties. The following terms apply to all files
associated with the software unless explicitly disclaimed in associated with the software unless explicitly disclaimed in
individual files. individual files.
The authors hereby grant permission to use, copy, modify, distribute, The authors hereby grant permission to use, copy, modify, distribute,
and license this software and its documentation for any purpose, and license this software and its documentation for any purpose,
provided that existing copyright notices are retained in all copies provided that existing copyright notices are retained in all copies
@ -13,20 +13,20 @@ authorized uses. Modifications to this software may be copyrighted by
their authors and need not follow the licensing terms described here, their authors and need not follow the licensing terms described here,
provided that the new terms are clearly indicated on the first page of provided that the new terms are clearly indicated on the first page of
each file where they apply. each file where they apply.
IN NO EVENT SHALL THE AUTHORS OR DISTRIBUTORS BE LIABLE TO ANY PARTY IN NO EVENT SHALL THE AUTHORS OR DISTRIBUTORS BE LIABLE TO ANY PARTY
FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
ARISING OUT OF THE USE OF THIS SOFTWARE, ITS DOCUMENTATION, OR ANY ARISING OUT OF THE USE OF THIS SOFTWARE, ITS DOCUMENTATION, OR ANY
DERIVATIVES THEREOF, EVEN IF THE AUTHORS HAVE BEEN ADVISED OF THE DERIVATIVES THEREOF, EVEN IF THE AUTHORS HAVE BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE. POSSIBILITY OF SUCH DAMAGE.
THE AUTHORS AND DISTRIBUTORS SPECIFICALLY DISCLAIM ANY WARRANTIES, THE AUTHORS AND DISTRIBUTORS SPECIFICALLY DISCLAIM ANY WARRANTIES,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND
NON-INFRINGEMENT. THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, AND NON-INFRINGEMENT. THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, AND
THE AUTHORS AND DISTRIBUTORS HAVE NO OBLIGATION TO PROVIDE THE AUTHORS AND DISTRIBUTORS HAVE NO OBLIGATION TO PROVIDE
MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
GOVERNMENT USE: If you are acquiring this software on behalf of the GOVERNMENT USE: If you are acquiring this software on behalf of the
U.S. government, the Government shall have only "Restricted Rights" in U.S. government, the Government shall have only "Restricted Rights" in
the software and related documentation as defined in the Federal the software and related documentation as defined in the Federal
@ -51,7 +51,7 @@ terms specified in this license.
#define _GNU_SOURCE #define _GNU_SOURCE
#include <stdio.h> // Need _GNU_SOURCE for asprintf #include <stdio.h> // Need _GNU_SOURCE for asprintf
#include <stasis/lhtable.h> #include <stasis/lhtable.h>
@ -77,7 +77,7 @@ terms specified in this license.
#undef releasePage #undef releasePage
#undef Page #undef Page
#ifdef LONG_TEST #ifdef LONG_TEST
#define PIN_COUNT #define PIN_COUNT
#endif #endif
@ -101,7 +101,7 @@ int pinCount = 0;
#ifdef PROFILE_LATCHES_WRITE_ONLY #ifdef PROFILE_LATCHES_WRITE_ONLY
compensated_function Page * __profile_loadPage(int xid, pageid_t pageid, char * file, int line) { compensated_function Page * __profile_loadPage(int xid, pageid_t pageid, char * file, int line) {
Page * ret = loadPage(xid, pageid); Page * ret = loadPage(xid, pageid);
@ -111,19 +111,19 @@ compensated_function Page * __profile_loadPage(int xid, pageid_t pageid, char *
char * holder = LH_ENTRY(find)(profile_load_hash, &ret, sizeof(void*)); char * holder = LH_ENTRY(find)(profile_load_hash, &ret, sizeof(void*));
int * pins = LH_ENTRY(find)(profile_load_pins_hash, &ret, sizeof(void*)); int * pins = LH_ENTRY(find)(profile_load_pins_hash, &ret, sizeof(void*));
if(!pins) { if(!pins) {
pins = malloc(sizeof(int)); pins = malloc(sizeof(int));
*pins = 0; *pins = 0;
LH_ENTRY(insert)(profile_load_pins_hash, &ret, sizeof(void*), pins); LH_ENTRY(insert)(profile_load_pins_hash, &ret, sizeof(void*), pins);
} }
if(*pins) { if(*pins) {
assert(holder); assert(holder);
char * newHolder; char * newHolder;
asprintf(&newHolder, "%s\n%s:%d", holder, file, line); asprintf(&newHolder, "%s\n%s:%d", holder, file, line);
free(holder); free(holder);
holder = newHolder; holder = newHolder;
} else { } else {
assert(!holder); assert(!holder);
asprintf(&holder, "%s:%d", file, line); asprintf(&holder, "%s:%d", file, line);
} }
@ -136,7 +136,7 @@ compensated_function Page * __profile_loadPage(int xid, pageid_t pageid, char *
} }
compensated_function void __profile_releasePage(Page * p) { compensated_function void __profile_releasePage(Page * p) {
pthread_mutex_lock(&profile_load_mutex); pthread_mutex_lock(&profile_load_mutex);
// int pageid = p->id; // int pageid = p->id;
@ -145,10 +145,10 @@ compensated_function void __profile_releasePage(Page * p) {
assert(pins); assert(pins);
if(*pins == 1) { if(*pins == 1) {
char * holder = LH_ENTRY(remove)(profile_load_hash, &p, sizeof(void*)); char * holder = LH_ENTRY(remove)(profile_load_hash, &p, sizeof(void*));
assert(holder); assert(holder);
free(holder); free(holder);
} }
@ -172,7 +172,7 @@ void (*forcePageRange)(pageid_t start, pageid_t stop) = 0;
void (*stasis_buffer_manager_close)() = 0; void (*stasis_buffer_manager_close)() = 0;
void (*stasis_buffer_manager_simulate_crash)() = 0; void (*stasis_buffer_manager_simulate_crash)() = 0;
Page * loadPage(int xid, pageid_t pageid) { Page * loadPage(int xid, pageid_t pageid) {
try_ret(NULL) { try_ret(NULL) {
// This lock is released at Tcommit() // This lock is released at Tcommit()
if(globalLockManager.readLockPage) { globalLockManager.readLockPage(xid, pageid); } if(globalLockManager.readLockPage) { globalLockManager.readLockPage(xid, pageid); }
@ -181,7 +181,7 @@ Page * loadPage(int xid, pageid_t pageid) {
return loadPageImpl(xid, pageid); return loadPageImpl(xid, pageid);
} }
Page * loadUninitializedPage(int xid, pageid_t pageid) { Page * loadUninitializedPage(int xid, pageid_t pageid) {
try_ret(NULL) { try_ret(NULL) {
// This lock is released at Tcommit() // This lock is released at Tcommit()
if(globalLockManager.readLockPage) { globalLockManager.readLockPage(xid, pageid); } if(globalLockManager.readLockPage) { globalLockManager.readLockPage(xid, pageid); }
@ -195,24 +195,25 @@ void releasePage(Page * p) {
releasePageImpl(p); releasePageImpl(p);
} }
int stasis_buffer_manager_open(int type) { int stasis_buffer_manager_open(int type, stasis_page_handle_t * ph) {
bufferManagerType = type; bufferManagerType = type;
static int lastType = 0; static int lastType = 0;
if(type == BUFFER_MANAGER_REOPEN) { if(type == BUFFER_MANAGER_REOPEN) {
type = lastType; type = lastType;
} }
lastType = type; lastType = type;
if(type == BUFFER_MANAGER_DEPRECATED_HASH) { if(type == BUFFER_MANAGER_DEPRECATED_HASH) {
stasis_buffer_manager_deprecated_open(); stasis_buffer_manager_deprecated_open(ph);
return 0; return 0;
} else if (type == BUFFER_MANAGER_MEM_ARRAY) { } else if (type == BUFFER_MANAGER_MEM_ARRAY) {
stasis_buffer_manager_mem_array_open(); stasis_buffer_manager_mem_array_open();
ph->close(ph); // XXX should never have been opened in the first place!
return 0; return 0;
} else if (type == BUFFER_MANAGER_HASH) { } else if (type == BUFFER_MANAGER_HASH) {
stasis_buffer_manager_hash_open(); stasis_buffer_manager_hash_open(ph);
return 0; return 0;
} else { } else {
// XXX error handling // XXX error handling
abort(); abort();
} }
} }

20
src/stasis/bufferManager/bufferHash.c
View file

@ -34,6 +34,8 @@ static replacementPolicy * lru;
static stasis_buffer_pool_t * stasis_buffer_pool; static stasis_buffer_pool_t * stasis_buffer_pool;
static stasis_page_handle_t * page_handle;
static int running; static int running;
typedef struct LL_ENTRY(node_t) node_t; typedef struct LL_ENTRY(node_t) node_t;
@ -110,7 +112,7 @@ inline static Page * writeBackOnePage() {
assert(old == victim); assert(old == victim);
// printf("Write(%ld)\n", (long)victim->id); // printf("Write(%ld)\n", (long)victim->id);
pageWrite(victim); /// XXX pageCleanup and pageFlushed might be heavyweight. page_handle->write(page_handle,victim); /// XXX pageCleanup and pageFlushed might be heavyweight.
stasis_page_cleanup(victim); stasis_page_cleanup(victim);
// Make sure that no one mistakenly thinks this is still a live copy. // Make sure that no one mistakenly thinks this is still a live copy.
victim->id = -1; victim->id = -1;
@ -269,7 +271,7 @@ static Page * bhLoadPageImpl_helper(int xid, const pageid_t pageid, int uninitia
// try to read this page from disk. // try to read this page from disk.
pthread_mutex_unlock(&mut); pthread_mutex_unlock(&mut);
pageRead(ret); page_handle->read(page_handle, ret);
pthread_mutex_lock(&mut); pthread_mutex_lock(&mut);
@ -322,13 +324,13 @@ static void bhReleasePage(Page * p) {
pthread_mutex_unlock(&mut); pthread_mutex_unlock(&mut);
} }
static void bhWriteBackPage(Page * p) { static void bhWriteBackPage(Page * p) {
pageWrite(p); page_handle->write(page_handle, p);
} }
static void bhForcePages() { static void bhForcePages() {
forcePageFile(); page_handle->force_file(page_handle);
} }
static void bhForcePageRange(pageid_t start, pageid_t stop) { static void bhForcePageRange(pageid_t start, pageid_t stop) {
forceRangePageFile(start, stop); page_handle->force_range(page_handle, start, stop);
} }
static void bhBufDeinit() { static void bhBufDeinit() {
running = 0; running = 0;
@ -340,7 +342,7 @@ static void bhBufDeinit() {
const struct LH_ENTRY(pair_t) * next; const struct LH_ENTRY(pair_t) * next;
LH_ENTRY(openlist)(cachedPages, &iter); LH_ENTRY(openlist)(cachedPages, &iter);
while((next = LH_ENTRY(readlist)(&iter))) { while((next = LH_ENTRY(readlist)(&iter))) {
pageWrite((next->value)); page_handle->write(page_handle, (next->value));
stasis_page_cleanup((next->value)); // normally called by writeBackOnePage() stasis_page_cleanup((next->value)); // normally called by writeBackOnePage()
} }
LH_ENTRY(closelist)(&iter); LH_ENTRY(closelist)(&iter);
@ -350,6 +352,7 @@ static void bhBufDeinit() {
lru->deinit(lru); lru->deinit(lru);
stasis_buffer_pool_deinit(stasis_buffer_pool); stasis_buffer_pool_deinit(stasis_buffer_pool);
page_handle->close(page_handle);
} }
static void bhSimulateBufferManagerCrash() { static void bhSimulateBufferManagerCrash() {
running = 0; running = 0;
@ -374,10 +377,11 @@ static void bhSimulateBufferManagerCrash() {
lru->deinit(lru); lru->deinit(lru);
stasis_buffer_pool_deinit(stasis_buffer_pool); stasis_buffer_pool_deinit(stasis_buffer_pool);
page_handle->close(page_handle);
} }
void stasis_buffer_manager_hash_open() { void stasis_buffer_manager_hash_open(stasis_page_handle_t * h) {
page_handle = h;
assert(!running); assert(!running);
#ifdef LONG_RUN #ifdef LONG_RUN

41
src/stasis/bufferManager/legacy/legacyBufferManager.c
View file

@ -4,6 +4,7 @@
#include <stasis/bufferManager.h> #include <stasis/bufferManager.h>
#include <stasis/pageHandle.h> #include <stasis/pageHandle.h>
#include <stasis/bufferPool.h>
#include <stasis/bufferManager/legacy/pageFile.h> #include <stasis/bufferManager/legacy/pageFile.h>
#include <stasis/bufferManager/legacy/pageCache.h> #include <stasis/bufferManager/legacy/pageCache.h>
@ -25,16 +26,28 @@ static compensated_function Page *bufManLoadUninitPage(int xid, pageid_t pageid)
static void bufManReleasePage (Page * p); static void bufManReleasePage (Page * p);
static void bufManSimulateBufferManagerCrash(); static void bufManSimulateBufferManagerCrash();
static stasis_page_handle_t * page_handle;
static stasis_buffer_pool_t * stasis_buffer_pool; static stasis_buffer_pool_t * stasis_buffer_pool;
int stasis_buffer_manager_deprecated_open() { static void pageWrite_legacyWrapper(Page * p) {
page_handle->write(page_handle,p);
}
static void forcePageFile_legacyWrapper() {
page_handle->force_file(page_handle);
}
static void forceRangePageFile_legacyWrapper(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) {
page_handle = ph;
releasePageImpl = bufManReleasePage; releasePageImpl = bufManReleasePage;
loadPageImpl = bufManLoadPage; loadPageImpl = bufManLoadPage;
loadUninitPageImpl = bufManLoadUninitPage; loadUninitPageImpl = bufManLoadUninitPage;
writeBackPage = pageWrite; writeBackPage = pageWrite_legacyWrapper;
forcePages = forcePageFile; forcePages = forcePageFile_legacyWrapper;
forcePageRange = forceRangePageFile; forcePageRange = forceRangePageFile_legacyWrapper;
stasis_buffer_manager_close = bufManBufDeinit; stasis_buffer_manager_close = bufManBufDeinit;
stasis_buffer_manager_simulate_crash = bufManSimulateBufferManagerCrash; stasis_buffer_manager_simulate_crash = bufManSimulateBufferManagerCrash;
@ -50,7 +63,7 @@ int stasis_buffer_manager_deprecated_open() {
first = stasis_buffer_pool_malloc_page(stasis_buffer_pool); first = stasis_buffer_pool_malloc_page(stasis_buffer_pool);
stasis_buffer_pool_free_page(stasis_buffer_pool, first, 0); stasis_buffer_pool_free_page(stasis_buffer_pool, first, 0);
LH_ENTRY(insert)(activePages, &first->id, sizeof(first->id), first); LH_ENTRY(insert)(activePages, &first->id, sizeof(first->id), first);
pageRead(first); page_handle->read(page_handle, first);
pageCacheInit(first); pageCacheInit(first);
int err = pthread_key_create(&lastPage, 0); int err = pthread_key_create(&lastPage, 0);
@ -73,7 +86,7 @@ static void bufManBufDeinit() {
LH_ENTRY(openlist(activePages, &iter)); LH_ENTRY(openlist(activePages, &iter));
while((next = LH_ENTRY(readlist)(&iter))) { while((next = LH_ENTRY(readlist)(&iter))) {
pageWrite((Page*)next->value); page_handle->write(page_handle, (Page*)next->value);
DEBUG("+"); DEBUG("+");
} }
@ -83,10 +96,10 @@ static void bufManBufDeinit() {
pageCacheDeinit(); pageCacheDeinit();
//closePageFile();
stasis_buffer_pool_deinit(stasis_buffer_pool); stasis_buffer_pool_deinit(stasis_buffer_pool);
page_handle->close(page_handle);
#ifdef PIN_COUNT #ifdef PIN_COUNT
if(pinCount != 0) { if(pinCount != 0) {
printf("WARNING: At exit, %d pages were still pinned!\n", pinCount); printf("WARNING: At exit, %d pages were still pinned!\n", pinCount);
@ -98,10 +111,10 @@ static void bufManBufDeinit() {
Just close file descriptors, don't do any other clean up. (For Just close file descriptors, don't do any other clean up. (For
testing.) testing.)
@todo buffer manager should never call closePageFile(); it not longer manages pageFile handles @todo buffer manager should never call close_(); it not longer manages pageFile handles
*/ */
void bufManSimulateBufferManagerCrash() { static void bufManSimulateBufferManagerCrash() {
closePageFile(); page_handle->close(page_handle);
#ifdef PIN_COUNT #ifdef PIN_COUNT
pinCount = 0; pinCount = 0;
#endif #endif
@ -259,12 +272,12 @@ static Page* bufManGetPage(pageid_t pageid, int locktype, int uninitialized) {
assert(ret != dummy_page); assert(ret != dummy_page);
if(ret->id != -1) { if(ret->id != -1) {
pageWrite(ret); page_handle->write(page_handle, ret);
} }
stasis_buffer_pool_free_page(stasis_buffer_pool, ret, pageid); stasis_buffer_pool_free_page(stasis_buffer_pool, ret, pageid);
if(!uninitialized) { if(!uninitialized) {
pageRead(ret); page_handle->read(page_handle, ret);
} else { } else {
memset(ret->memAddr, 0, PAGE_SIZE); memset(ret->memAddr, 0, PAGE_SIZE);
ret->dirty = 0; ret->dirty = 0;
@ -283,7 +296,7 @@ static Page* bufManGetPage(pageid_t pageid, int locktype, int uninitialized) {
/* @todo Put off putting this back into cache until we're done with /* @todo Put off putting this back into cache until we're done with
it. -- This could cause the cache to empty out if the ratio of it. -- This could cause the cache to empty out if the ratio of
threads to buffer slots is above ~ 1/3, but it decreases the threads to buffer slots is above ~ 1/3, but it decreases the
liklihood of thrashing. */ likelihood of thrashing. */
cacheInsertPage(ret); cacheInsertPage(ret);
pthread_mutex_unlock(&loadPagePtr_mutex); pthread_mutex_unlock(&loadPagePtr_mutex);

61
src/stasis/bufferManager/legacy/pageFile.c
View file

@ -1,22 +1,22 @@
/** /**
@file @file
This file handles all of the file I/O for pages. This file handles all of the file I/O for pages.
*/ */
#include "config.h" #include "config.h"
#include <stasis/page.h>
#include <stasis/page.h>
#include <stasis/bufferManager.h> #include <stasis/bufferManager.h>
#include <stasis/pageHandle.h> #include <stasis/pageHandle.h>
#include <stasis/truncation.h>
#include <stasis/bufferManager/legacy/pageFile.h> #include <stasis/bufferManager/legacy/pageFile.h>
#include <stasis/logger/logger2.h>
#include <assert.h> #include <assert.h>
#include <stasis/logger/logger2.h>
#include <stasis/truncation.h>
#include <sys/types.h> #include <sys/types.h>
#include <sys/stat.h> #include <sys/stat.h>
#include <stdlib.h>
/** For O_DIRECT. It's unclear that this is the correct thing to \#define, but it works under linux. */ /** For O_DIRECT. It's unclear that this is the correct thing to \#define, but it works under linux. */
#define __USE_GNU #define __USE_GNU
@ -28,16 +28,16 @@
static int stable = -1; static int stable = -1;
static pthread_mutex_t stable_mutex; static pthread_mutex_t stable_mutex;
static void pfForcePageFile(); static void pfForcePageFile(stasis_page_handle_t* h);
static void pfClosePageFile(); static void pfClosePageFile(stasis_page_handle_t* h);
static void pfForceRangePageFile(lsn_t start, lsn_t stop) ; static void pfForceRangePageFile(stasis_page_handle_t* h, lsn_t start, lsn_t stop) ;
inline static pageid_t myLseekNoLock(int f, pageid_t offset, int whence); inline static pageid_t myLseekNoLock(int f, pageid_t offset, int whence);
static int oldOffset = -1; static int oldOffset = -1;
int pageFile_isDurable = 1; int pageFile_isDurable = 1;
static void pfPageRead(Page *ret) { static void pfPageRead(stasis_page_handle_t * h, Page *ret) {
pageid_t pageoffset; pageid_t pageoffset;
pageid_t offset; pageid_t offset;
@ -46,7 +46,7 @@ static void pfPageRead(Page *ret) {
pthread_mutex_lock(&stable_mutex); pthread_mutex_lock(&stable_mutex);
if(oldOffset != pageoffset) { if(oldOffset != pageoffset) {
offset = myLseekNoLock(stable, pageoffset, SEEK_SET); offset = myLseekNoLock(stable, pageoffset, SEEK_SET);
assert(offset == pageoffset); assert(offset == pageoffset);
} else { } else {
@ -60,7 +60,7 @@ static void pfPageRead(Page *ret) {
if(read_size != PAGE_SIZE) { if(read_size != PAGE_SIZE) {
if (!read_size) { /* Past EOF... */ if (!read_size) { /* Past EOF... */
memset(ret->memAddr, 0, PAGE_SIZE); // The file will be extended when we write to the new page. memset(ret->memAddr, 0, PAGE_SIZE); // The file will be extended when we write to the new page.
} else if(read_size == -1) { } else if(read_size == -1) {
perror("pageFile.c couldn't read"); perror("pageFile.c couldn't read");
fflush(NULL); fflush(NULL);
abort(); abort();
@ -78,13 +78,13 @@ static void pfPageRead(Page *ret) {
} }
/** @todo need to sync the page file to disk occasionally, so that the /** @todo need to sync the page file to disk occasionally, so that the
dirty page table can be kept up to date. */ dirty page table can be kept up to date. */
static void pfPageWrite(Page * ret) { static void pfPageWrite(stasis_page_handle_t * h, Page * ret) {
/** If the page is clean, there's no reason to write it out. */ /** If the page is clean, there's no reason to write it out. */
assert(ret->dirty == dirtyPages_isDirty(ret)); assert(ret->dirty == dirtyPages_isDirty(ret));
if(!ret->dirty) { if(!ret->dirty) {
// if(!dirtyPages_isDirty(ret)) { // if(!dirtyPages_isDirty(ret)) {
DEBUG(" =^)~ "); DEBUG(" =^)~ ");
return; return;
} }
pageid_t pageoffset = ret->id * PAGE_SIZE; pageid_t pageoffset = ret->id * PAGE_SIZE;
pageid_t offset ; pageid_t offset ;
@ -133,12 +133,13 @@ static void pfPageWrite(Page * ret) {
//#define PAGE_FILE_O_DIRECT //#define PAGE_FILE_O_DIRECT
/** @todo O_DIRECT is broken in older linuxes (eg 2.4). The build script should disable it on such platforms. */ /** @todo O_DIRECT is broken in older linuxes (eg 2.4). The build script should disable it on such platforms. */
void openPageFile() { stasis_page_handle_t* openPageFile() {
pageRead = pfPageRead; stasis_page_handle_t * ret = malloc(sizeof(*ret));
pageWrite = pfPageWrite; ret->read = pfPageRead;
forcePageFile = pfForcePageFile; ret->write = pfPageWrite;
forceRangePageFile = pfForceRangePageFile; ret->force_file = pfForcePageFile;
closePageFile = pfClosePageFile; ret->force_range = pfForceRangePageFile;
ret->close = pfClosePageFile;
DEBUG("Opening storefile.\n"); DEBUG("Opening storefile.\n");
@ -149,7 +150,7 @@ void openPageFile() {
stable = open (stasis_store_file_name, stable = open (stasis_store_file_name,
O_CREAT | O_RDWR, FILE_PERM); O_CREAT | O_RDWR, FILE_PERM);
#endif #endif
if(!pageFile_isDurable) { if(!pageFile_isDurable) {
fprintf(stderr, "\n**********\n"); fprintf(stderr, "\n**********\n");
fprintf (stderr, "pageFile.c: pageFile_isDurable==0; the page file will not force writes to disk.\n"); fprintf (stderr, "pageFile.c: pageFile_isDurable==0; the page file will not force writes to disk.\n");
fprintf (stderr, " Transactions will not be durable if the system crashes.\n**********\n"); fprintf (stderr, " Transactions will not be durable if the system crashes.\n**********\n");
@ -159,13 +160,13 @@ void openPageFile() {
fflush(NULL); fflush(NULL);
abort(); abort();
} }
pthread_mutex_init(&stable_mutex, NULL);
pthread_mutex_init(&stable_mutex, NULL);
return ret;
} }
static void pfForcePageFile() { static void pfForcePageFile(stasis_page_handle_t * h) {
if(pageFile_isDurable) { if(pageFile_isDurable) {
#ifndef PAGE_FILE_O_DIRECT #ifndef PAGE_FILE_O_DIRECT
#ifdef HAVE_FDATASYNC #ifdef HAVE_FDATASYNC
fdatasync(stable); fdatasync(stable);
@ -176,7 +177,7 @@ static void pfForcePageFile() {
} }
} }
static void pfForceRangePageFile(lsn_t start, lsn_t stop) { static void pfForceRangePageFile(stasis_page_handle_t * h, lsn_t start, lsn_t stop) {
if(pageFile_isDurable) { if(pageFile_isDurable) {
#ifdef HAVE_SYNC_FILE_RANGE #ifdef HAVE_SYNC_FILE_RANGE
int ret = sync_file_range(stable, start, stop, int ret = sync_file_range(stable, start, stop,
@ -193,15 +194,15 @@ static void pfForceRangePageFile(lsn_t start, lsn_t stop) {
#endif #endif
} }
} }
static void pfClosePageFile() { static void pfClosePageFile(stasis_page_handle_t * h) {
assert(stable != -1); assert(stable != -1);
forcePageFile(); h->force_file(h);
DEBUG("Closing storefile\n"); DEBUG("Closing storefile\n");
int ret = close(stable); int ret = close(stable);
if(-1 == ret) { if(-1 == ret) {
perror("Couldn't close storefile."); perror("Couldn't close storefile.");
fflush(NULL); fflush(NULL);
abort(); abort();

10
src/stasis/io/handle.c
View file

@ -5,12 +5,18 @@
* Author: sears * Author: sears
*/ */
#include <config.h> #include <config.h>
#include <stasis/common.h>
#include <stasis/constants.h>
#include <stasis/flags.h>
#include <stasis/io/handle.h>
#include <sys/types.h> #include <sys/types.h>
#include <sys/stat.h> #include <sys/stat.h>
#include <fcntl.h> #include <fcntl.h>
#include <stasis/io/handle.h> #include <assert.h>
#include <stdio.h>
// @todo this factory stuff doesn't really belong here... // @todo this factory stuff doesn't really belong here...
static stasis_handle_t * fast_factory(lsn_t off, lsn_t len, void * ignored) { static stasis_handle_t * fast_factory(lsn_t off, lsn_t len, void * ignored) {

6
src/stasis/io/non_blocking.c
View file

@ -1,4 +1,8 @@
#include "config.h"
#include <stasis/common.h>
#include <stasis/constants.h>
#include <stasis/io/handle.h> #include <stasis/io/handle.h>
#include <stasis/linkedlist.h>
#include <stasis/redblack.h> #include <stasis/redblack.h>
#include <pthread.h> #include <pthread.h>
#include <errno.h> #include <errno.h>
@ -6,7 +10,7 @@
#include <assert.h> #include <assert.h>
#include <stdio.h> #include <stdio.h>
#include <string.h> #include <string.h>
#include <stasis/linkedlist.h>
/** /**
@file @file

22
src/stasis/operations/pageOperations.c
View file

@ -1,9 +1,11 @@
#define _XOPEN_SOURCE 600 #define _XOPEN_SOURCE 600
#include <stdlib.h> #include <stdlib.h>
#include "config.h" #include <config.h>
#include <stasis/page.h> #include <stasis/page.h>
#include <stasis/logger/logEntry.h>
#include <stasis/operations/pageOperations.h> #include <stasis/operations/pageOperations.h>
#include <stasis/operations/regions.h>
#include <assert.h> #include <assert.h>
#include <alloca.h> #include <alloca.h>
@ -74,7 +76,7 @@ int TpageSetRange(int xid, pageid_t page, int offset, const void * memAddr, int
/** @todo region sizes should be dynamic. */ /** @todo region sizes should be dynamic. */
#define TALLOC_PAGE_REGION_SIZE 128 // 512K #define TALLOC_PAGE_REGION_SIZE 128 // 512K
/** /**
This calls loadPage and releasePage directly, and bypasses the This calls loadPage and releasePage directly, and bypasses the
logger. logger.
*/ */
@ -86,7 +88,7 @@ compensated_function void pageOperationsInit() {
recordid rid = {0, 0, sizeof(boundary_tag)}; recordid rid = {0, 0, sizeof(boundary_tag)};
// Need to find a region with some free pages in it. // Need to find a region with some free pages in it.
Tread(-1, rid, &t); Tread(-1, rid, &t);
pthread_mutex_init(&pageAllocMutex, NULL); pthread_mutex_init(&pageAllocMutex, NULL);
} }
@ -116,7 +118,7 @@ compensated_function pageid_t TpageAllocMany(int xid, int count) {
return TregionAlloc(xid, count, STORAGE_MANAGER_NAIVE_PAGE_ALLOC); return TregionAlloc(xid, count, STORAGE_MANAGER_NAIVE_PAGE_ALLOC);
} }
int TpageGetType(int xid, pageid_t page) { int TpageGetType(int xid, pageid_t page) {
Page * p = loadPage(xid, page); Page * p = loadPage(xid, page);
int ret = *stasis_page_type_ptr(p); int ret = *stasis_page_type_ptr(p);
releasePage(p); releasePage(p);
@ -132,11 +134,11 @@ int TpageGetType(int xid, pageid_t page) {
load page to be used, and update in-memory data. (obtains lock on loaded page) load page to be used, and update in-memory data. (obtains lock on loaded page)
T update() the page, zeroing it, and saving the old successor in the log. T update() the page, zeroing it, and saving the old successor in the log.
relase the page (avoid deadlock in next step) relase the page (avoid deadlock in next step)
T update() LLADD's header page (the first in the store file) with a new copy of T update() LLADD's header page (the first in the store file) with a new copy of
the in-memory data, saving old version in the log. the in-memory data, saving old version in the log.
release mutex release mutex
Free: Free:
obtain mutex obtain mutex
determine the current head of the freelist using in-memory data determine the current head of the freelist using in-memory data
@ -151,8 +153,8 @@ int TpageGetType(int xid, pageid_t page) {
and setting the successor pointer. This operation physically logs and setting the successor pointer. This operation physically logs
a whole page, which makes it expensive. Doing so is necessary in a whole page, which makes it expensive. Doing so is necessary in
general, but it is possible that application specific logic could general, but it is possible that application specific logic could
avoid the physical logging here. avoid the physical logging here.
Instead, we should just record the fact that the page was freed Instead, we should just record the fact that the page was freed
somewhere. That way, we don't need to read the page in, or write somewhere. That way, we don't need to read the page in, or write
out information about it. If we lock the page against out information about it. If we lock the page against
@ -215,8 +217,8 @@ static int op_initialize_page(const LogEntry* e, Page* p) {
return 0; return 0;
} }
stasis_operation_impl stasis_op_impl_page_initialize() { stasis_operation_impl stasis_op_impl_page_initialize() {
stasis_operation_impl o = { stasis_operation_impl o = {
OPERATION_INITIALIZE_PAGE, OPERATION_INITIALIZE_PAGE,
OPERATION_INITIALIZE_PAGE, OPERATION_INITIALIZE_PAGE,
OPERATION_NOOP, OPERATION_NOOP,

49
src/stasis/pageHandle.c
View file

@ -9,21 +9,12 @@
#include <stasis/page.h> #include <stasis/page.h>
void (*pageWrite)(Page * dat);
void (*pageRead)(Page * ret);
void (*forcePageFile)();
void (*forceRangePageFile)();
void (*closePageFile)();
int printedForceWarning = 0;
static stasis_handle_t * h;
/** /**
@todo Make sure this doesn't need to be atomic. (It isn't!) Can @todo Make sure this doesn't need to be atomic. (It isn't!) Can
we get in trouble by setting the page clean after it's written we get in trouble by setting the page clean after it's written
out, or forcing the log too early? out, or forcing the log too early?
*/ */
static void phWrite(Page * ret) { static void phWrite(stasis_page_handle_t * ph, Page * ret) {
if(!ret->dirty) { return; } if(!ret->dirty) { return; }
// This lock is only held to make the page implementation happy. We should // This lock is only held to make the page implementation happy. We should
// implicitly have exclusive access to the page before this function is called, // implicitly have exclusive access to the page before this function is called,
@ -31,7 +22,7 @@ static void phWrite(Page * ret) {
writelock(ret->rwlatch,0); writelock(ret->rwlatch,0);
stasis_page_flushed(ret); stasis_page_flushed(ret);
LogForce(stasis_log_file, ret->LSN, LOG_FORCE_WAL); LogForce(stasis_log_file, ret->LSN, LOG_FORCE_WAL);
int err = h->write(h, PAGE_SIZE * ret->id, ret->memAddr, PAGE_SIZE); int err = ((stasis_handle_t*)ph->impl)->write(ph->impl, PAGE_SIZE * ret->id, ret->memAddr, PAGE_SIZE);
if(err) { if(err) {
printf("Couldn't write to page file: %s\n", strerror(err)); printf("Couldn't write to page file: %s\n", strerror(err));
fflush(stdout); fflush(stdout);
@ -40,9 +31,9 @@ static void phWrite(Page * ret) {
dirtyPages_remove(ret); dirtyPages_remove(ret);
unlock(ret->rwlatch); unlock(ret->rwlatch);
} }
static void phRead(Page * ret) { static void phRead(stasis_page_handle_t * ph, Page * ret) {
writelock(ret->rwlatch,0); writelock(ret->rwlatch,0);
int err = h->read(h, PAGE_SIZE * ret->id, ret->memAddr, PAGE_SIZE); int err = ((stasis_handle_t*)ph->impl)->read(ph->impl, PAGE_SIZE * ret->id, ret->memAddr, PAGE_SIZE);
if(err) { if(err) {
if(err == EDOM) { if(err == EDOM) {
// tried to read off end of file... // tried to read off end of file...
@ -57,30 +48,32 @@ static void phRead(Page * ret) {
stasis_page_loaded(ret); stasis_page_loaded(ret);
unlock(ret->rwlatch); unlock(ret->rwlatch);
} }
static void phForce() { static void phForce(stasis_page_handle_t * ph) {
int err = h->force(h); int err = ((stasis_handle_t*)ph->impl)->force(ph->impl);
assert(!err); assert(!err);
} }
static void phForceRange(lsn_t start, lsn_t stop) { static void phForceRange(stasis_page_handle_t * ph, lsn_t start, lsn_t stop) {
int err = h->force_range(h,start,stop); int err = ((stasis_handle_t*)ph->impl)->force_range(ph->impl,start,stop);
assert(!err); assert(!err);
} }
static void phClose() { static void phClose(stasis_page_handle_t * ph) {
int err = h->close(h); int err = ((stasis_handle_t*)ph->impl)->close(ph->impl);
DEBUG("Closing pageHandle\n"); DEBUG("Closing pageHandle\n");
if(err) { if(err) {
printf("Couldn't close page file: %s\n", strerror(err)); printf("Couldn't close page file: %s\n", strerror(err));
fflush(stdout); fflush(stdout);
abort(); abort();
} }
free(ph);
} }
stasis_page_handle_t * stasis_page_handle_open(stasis_handle_t * handle) {
void pageHandleOpen(stasis_handle_t * handle) {
DEBUG("Using pageHandle implementation\n"); DEBUG("Using pageHandle implementation\n");
pageWrite = phWrite; stasis_page_handle_t * ret = malloc(sizeof(*ret));
pageRead = phRead; ret->write = phWrite;
forcePageFile = phForce; ret->read = phRead;
forceRangePageFile = phForceRange; ret->force_file = phForce;
closePageFile = phClose; ret->force_range = phForceRange;
h = handle; ret->close = phClose;
ret->impl = handle;
return ret;
} }

37
src/stasis/transactional2.c
View file

@ -21,7 +21,7 @@
#include <stasis/truncation.h> #include <stasis/truncation.h>
#include <stasis/io/handle.h> #include <stasis/io/handle.h>
#include <stasis/blobManager.h> // XXX remove this, move Tread() to set.c #include <stasis/blobManager.h> // XXX remove this, move Tread() to set.c
//#include <stdio.h>
#include <assert.h> #include <assert.h>
#include <limits.h> #include <limits.h>
@ -51,8 +51,8 @@ void stasis_transaction_table_init() {
} }
int Tinit() { int Tinit() {
pthread_mutex_init(&stasis_transaction_table_mutex, NULL); pthread_mutex_init(&stasis_transaction_table_mutex, NULL);
stasis_initted = 1; stasis_initted = 1;
stasis_transaction_table_num_active = 0; stasis_transaction_table_num_active = 0;
compensations_init(); compensations_init();
@ -60,26 +60,28 @@ int Tinit() {
stasis_transaction_table_init(); stasis_transaction_table_init();
stasis_operation_table_init(); stasis_operation_table_init();
dirtyPagesInit(); dirtyPagesInit();
if(LOG_TO_FILE == stasis_log_type) {
stasis_log_file = stasis_log_safe_writes_open(stasis_log_file_name,
stasis_log_file_mode,
stasis_log_file_permissions);
} else if(LOG_TO_MEMORY == stasis_log_type) {
stasis_log_file = stasis_log_impl_in_memory_open();
} else {
assert(stasis_log_file != NULL);
}
stasis_page_init();
if(LOG_TO_FILE == stasis_log_type) {
stasis_log_file = stasis_log_safe_writes_open(stasis_log_file_name,
stasis_log_file_mode,
stasis_log_file_permissions);
} else if(LOG_TO_MEMORY == stasis_log_type) {
stasis_log_file = stasis_log_impl_in_memory_open();
} else {
assert(stasis_log_file != NULL);
}
stasis_page_init();
stasis_page_handle_t * page_handle;
if(bufferManagerFileHandleType == BUFFER_MANAGER_FILE_HANDLE_DEPRECATED) { if(bufferManagerFileHandleType == BUFFER_MANAGER_FILE_HANDLE_DEPRECATED) {
printf("\nWarning: Using old I/O routines (with known bugs).\n"); printf("\nWarning: Using old I/O routines (with known bugs).\n");
openPageFile(); page_handle = openPageFile();
} else { } else {
stasis_handle_t * h = stasis_handle_open(stasis_store_file_name); stasis_handle_t * h = stasis_handle_open(stasis_store_file_name);
// XXX should not be global. // XXX should not be global.
pageHandleOpen(h); page_handle = stasis_page_handle_open(h);
} }
stasis_buffer_manager_open(bufferManagerType); stasis_buffer_manager_open(bufferManagerType, page_handle);
DEBUG("Buffer manager type = %d\n", bufferManagerType); DEBUG("Buffer manager type = %d\n", bufferManagerType);
pageOperationsInit(); pageOperationsInit();
TallocInit(); TallocInit();
@ -347,7 +349,6 @@ int Tdeinit() {
TallocDeinit(); TallocDeinit();
stasis_buffer_manager_close(); stasis_buffer_manager_close();
DEBUG("Closing page file tdeinit\n"); DEBUG("Closing page file tdeinit\n");
closePageFile();
stasis_page_deinit(); stasis_page_deinit();
stasis_log_file->close(stasis_log_file); stasis_log_file->close(stasis_log_file);
dirtyPagesDeinit(); dirtyPagesDeinit();
@ -364,7 +365,7 @@ int TuncleanShutdown() {
stasis_truncation_deinit(); stasis_truncation_deinit();
TnaiveHashDeinit(); TnaiveHashDeinit();
stasis_buffer_manager_simulate_crash(); stasis_buffer_manager_simulate_crash();
// XXX: closePageFile? // XXX: close_file?
stasis_page_deinit(); stasis_page_deinit();
stasis_log_file->close(stasis_log_file); stasis_log_file->close(stasis_log_file);
stasis_transaction_table_num_active = 0; stasis_transaction_table_num_active = 0;

7
stasis/bufferManager.h
View file

@ -76,14 +76,11 @@ terms specified in this license.
@ingroup BUFFER_MANAGER @ingroup BUFFER_MANAGER
* $Id$ * $Id$
*/ */
#include <stasis/transactional.h>
#ifndef __BUFFERMANAGER_H__ #ifndef __BUFFERMANAGER_H__
#define __BUFFERMANAGER_H__ #define __BUFFERMANAGER_H__
BEGIN_C_DECLS BEGIN_C_DECLS
#include <stasis/pageHandle.h>
/** /**
* Obtain a pointer to a page from the buffer manager. The page will * Obtain a pointer to a page from the buffer manager. The page will
* be pinned, and the pointer valid until releasePage is called. * be pinned, and the pointer valid until releasePage is called.
@ -148,7 +145,7 @@ extern void (*forcePages)();
extern void (*forcePageRange)(pageid_t start, pageid_t stop); extern void (*forcePageRange)(pageid_t start, pageid_t stop);
extern void (*stasis_buffer_manager_simulate_crash)(); extern void (*stasis_buffer_manager_simulate_crash)();
int stasis_buffer_manager_open(int type); int stasis_buffer_manager_open(int type, stasis_page_handle_t* ph);
/** /**
* will write out any dirty pages, assumes that there are no running * will write out any dirty pages, assumes that there are no running
* transactions * transactions

6
stasis/bufferManager/bufferHash.h
View file

@ -1 +1,5 @@
void stasis_buffer_manager_hash_open(); #ifndef STASIS_BUFFERMANAGER_BUFFERHASH_H
#define STASIS_BUFFERMANAGER_BUFFERHASH_H
#include <stasis/pageHandle.h>
void stasis_buffer_manager_hash_open(stasis_page_handle_t* ph);
#endif //STASIS_BUFFERMANAGER_BUFFERHASH_H

9
stasis/bufferManager/legacy/legacyBufferManager.h
View file

@ -1,4 +1,5 @@
#ifndef __STASIS_BUFFERMANAGER_LEGACY_LEGACYBUFFERMANAGER_H #ifndef STASIS_BUFFERMANAGER_LEGACY_LEGACYBUFFERMANAGER_H
#define __STASIS_BUFFERMANAGER_LEGACY_LEGACYBUFFERMANAGER_H #define STASIS_BUFFERMANAGER_LEGACY_LEGACYBUFFERMANAGER_H
int stasis_buffer_manager_deprecated_open(); #include <stasis/pageHandle.h>
#endif//__STASIS_BUFFERMANAGER_LEGACY_LEGACYBUFFERMANAGER_H int stasis_buffer_manager_deprecated_open(stasis_page_handle_t * ph);
#endif//STASIS_BUFFERMANAGER_LEGACY_LEGACYBUFFERMANAGER_H

4
stasis/bufferManager/legacy/pageCache.h
View file

@ -8,7 +8,7 @@
Implements lladd's caching policy. Looks up pageid in the cache. Implements lladd's caching policy. Looks up pageid in the cache.
If pageid doesn't exist, then allocate a new slot for it. If If pageid doesn't exist, then allocate a new slot for it. If
there are no new slots, then callback into bufferManager's there are no new slots, then callback into bufferManager's
pageRead() function. Eventually, this could be extended to read_page() function. Eventually, this could be extended to
support application specific caching schemes. support application specific caching schemes.
If you would like to implement your own caching policy, implement If you would like to implement your own caching policy, implement
@ -18,7 +18,7 @@
The implementation of this module does not need to be threadsafe. The implementation of this module does not need to be threadsafe.
@param first The caller should manually read this page by calling @param first The caller should manually read this page by calling
pageRead() before calling pageCacheInit. read_page() before calling pageCacheInit.
@todo pageCacheInit should not take a page as a parameter. @todo pageCacheInit should not take a page as a parameter.

4
stasis/bufferManager/legacy/pageFile.h
View file

@ -2,6 +2,8 @@
#ifndef __PAGE_FILE_H #ifndef __PAGE_FILE_H
#define __PAGE_FILE_H #define __PAGE_FILE_H
void openPageFile(); #include <stasis/pageHandle.h>
stasis_page_handle_t* openPageFile();
#endif /* __PAGE_FILE_H */ #endif /* __PAGE_FILE_H */

4
stasis/io/handle.h
View file

@ -1,8 +1,6 @@
#include <stasis/transactional.h>
#ifndef IO_HANDLE_H #ifndef IO_HANDLE_H
#define IO_HANDLE_H #define IO_HANDLE_H
#include <stasis/common.h>
/** /**
stasis_handle() is a macro that prepends a unique prefix to the its stasis_handle() is a macro that prepends a unique prefix to the its

4
stasis/operations/arrayList.h
View file

@ -75,7 +75,7 @@ terms specified in this license.
/** @{ */ /** @{ */
#ifndef __ARRAY_LIST_H #ifndef __ARRAY_LIST_H
#define __ARRAY_LIST_H #define __ARRAY_LIST_H
#include <stasis/operations.h>
/** Allocate a new array list. /** Allocate a new array list.
@param xid The transaction allocating the new arrayList. @param xid The transaction allocating the new arrayList.
@ -108,7 +108,7 @@ compensated_function int TarrayListExtend(int xid, recordid rid, int slots);
@param rid the recordid pointing to the ArrayList. @param rid the recordid pointing to the ArrayList.
@return The number of items stored in the ArrayList. @return The number of items stored in the ArrayList.
*/ */
compensated_function int TarrayListLength(int xid, recordid rid); compensated_function int TarrayListLength(int xid, recordid rid);
/** Used by Tread() and Tset() to map from arrayList index to recordid. */ /** Used by Tread() and Tset() to map from arrayList index to recordid. */
recordid dereferenceArrayListRid(int xid, Page * p, int offset); recordid dereferenceArrayListRid(int xid, Page * p, int offset);

6
stasis/operations/lsmIterators.h
View file

@ -5,7 +5,7 @@
#include "stasis/bufferManager.h" #include "stasis/bufferManager.h"
#include "stasis/page/compression/compression.h" #include "stasis/page/compression/compression.h"
#include "stasis/page/compression/tuple.h" #include "stasis/page/compression/tuple.h"
#include "stasis/operations.h"
/** /**
@file @file
@ -68,7 +68,7 @@ class gcIterator {
} }
} else { } else {
at_end_=true; at_end_=true;
} }
} }
explicit gcIterator() explicit gcIterator()
: i_(0), : i_(0),
@ -682,7 +682,7 @@ class versioningIterator {
toByteArray<SET,ROW>(stlSetIterator<SET,ROW> * const t); toByteArray<SET,ROW>(stlSetIterator<SET,ROW> * const t);
}; };
template <class SET,class ROW> template <class SET,class ROW>
inline const byte * toByteArray(stlSetIterator<SET,ROW> * const t) { inline const byte * toByteArray(stlSetIterator<SET,ROW> * const t) {
return (*(t->it_)).toByteArray(); return (*(t->it_)).toByteArray();
} }

11
stasis/operations/pageOperations.h
View file

@ -41,12 +41,12 @@ terms specified in this license.
---*/ ---*/
/** /**
* @file * @file
* *
* Provides raw access to entire pages. * Provides raw access to entire pages.
* *
* LLADD's pages are PAGE_SIZE bytes long. Currently, two integers are * LLADD's pages are PAGE_SIZE bytes long. Currently, two integers are
* reserved for the LSN and the page type. providing PAGE_SIZE-8 bytes * reserved for the LSN and the page type. providing PAGE_SIZE-8 bytes
* of usable space. * of usable space.
* *
* @ingroup OPERATIONS * @ingroup OPERATIONS
@ -54,11 +54,10 @@ terms specified in this license.
* @see page.h * @see page.h
* *
* $Id$ * $Id$
*/ */
#ifndef __PAGE_OPERATIONS_H__ #ifndef __PAGE_OPERATIONS_H__
#define __PAGE_OPERATIONS_H__ #define __PAGE_OPERATIONS_H__
#include <stasis/operations.h>
compensated_function pageid_t TpageAlloc(int xid); compensated_function pageid_t TpageAlloc(int xid);
compensated_function pageid_t TfixedPageAlloc(int xid, int size); compensated_function pageid_t TfixedPageAlloc(int xid, int size);

6
stasis/operations/regions.h
View file

@ -1,3 +1,6 @@
#ifndef STASIS_OPERATIONS_REGIONS_H
#define STASIS_OPERATIONS_REGIONS_H
#include <stasis/operations.h>
/** /**
Allocates and deallocates regions of pages. The page before each Allocates and deallocates regions of pages. The page before each
region is of type BOUNDARY_TAG. All regions except the last one in region is of type BOUNDARY_TAG. All regions except the last one in
@ -9,7 +12,7 @@
a newly allocated region are undefined. a newly allocated region are undefined.
*/ */
typedef struct boundary_tag { typedef struct boundary_tag {
pageid_t size; pageid_t size;
pageid_t prev_size; pageid_t prev_size;
int status; int status;
@ -51,3 +54,4 @@ stasis_operation_impl stasis_op_impl_region_dealloc_inverse();
void fsckRegions(int xid); void fsckRegions(int xid);
// XXX need callbacks to handle transaction commit/abort. // XXX need callbacks to handle transaction commit/abort.
#endif

16
stasis/page.h
View file

@ -88,8 +88,8 @@ terms specified in this license.
Page implementations are free to define their own access methods Page implementations are free to define their own access methods
and APIs. However, Stasis's record oriented page interface and APIs. However, Stasis's record oriented page interface
provides a default set of methods for page access. provides a default set of methods for page access.
@see PAGE_RECORD_INTERFACE @see PAGE_RECORD_INTERFACE
@todo Page deallocators should call stasis_page_cleanup() @todo Page deallocators should call stasis_page_cleanup()
@ -102,8 +102,10 @@ terms specified in this license.
#define __PAGE_H__ #define __PAGE_H__
#include <stasis/common.h> #include <stasis/common.h>
#include <stasis/constants.h>
#include <stasis/latches.h> #include <stasis/latches.h>
#include <stasis/transactional.h>
#include <assert.h>
BEGIN_C_DECLS BEGIN_C_DECLS
@ -182,7 +184,7 @@ struct Page_s {
Read from a record Read lock Read from a record Read lock
@see rwlatch, getPage(), pageRalloc(), pageRead() @see rwlatch, getPage(), pageRalloc(), read_page()
*/ */
rwl * loadlatch; rwl * loadlatch;
@ -337,8 +339,8 @@ lsn_t stasis_page_lsn_read(const Page * page);
stasis_page_type_ptr(), for example: stasis_page_type_ptr(), for example:
@code @code
int * stasis_page_type_ptr(Page *p) { int * stasis_page_type_ptr(Page *p) {
return ( (int*)stasis_page_lsn_ptr(Page *p) ) - 1; return ( (int*)stasis_page_lsn_ptr(Page *p) ) - 1;
} }
@endcode @endcode
@ -487,7 +489,7 @@ static const size_t USABLE_SIZE_OF_PAGE = (PAGE_SIZE - sizeof(lsn_t) - sizeof(in
@return The length of the record in bytes. @return The length of the record in bytes.
*/ */
static inline size_t static inline size_t
stasis_record_type_to_size(ssize_t type) { stasis_record_type_to_size(ssize_t type) {
if(type >= 0) { if(type >= 0) {
return type; return type;

107
stasis/pageHandle.h
View file

@ -1,57 +1,66 @@
#include <stasis/bufferPool.h> #ifndef STASIS_PAGEHANDLE_H
#define STASIS_PAGEHANDLE_H
#include <stasis/page.h>
#include <stasis/io/handle.h> #include <stasis/io/handle.h>
/**
* Write page to disk, including correct LSN. Doing so may require a
* call to logSync(). There is not much that can be done to avoid
* this call right now. In the future, it might make sense to check
* to see if some other page can be kicked, in order to avoid the log
* flush.
*
* This funciton is automatically called immediately before a page is
* evicted from cache. Operation implementors, and normal users
* should never have to call this routine.
*
* @see bufferManager.c for the implementation of pageWrite
*
* @param dat The page to be flushed to disk. No concurrent calls
* may have the same value of dat.
*
*/
extern void (*pageWrite)(Page * dat);
extern int pageFile_isDurable; typedef struct stasis_page_handle_t {
/**
* Write page to disk, including correct LSN. Doing so may require a
* call to logSync(). There is not much that can be done to avoid
* this call right now. In the future, it might make sense to check
* to see if some other page can be kicked, in order to avoid the log
* flush.
*
* This function is automatically called immediately before a page is
* evicted from cache. Operation implementors, and normal users
* should never have to call this routine.
*
* @see bufferManager.c for the implementation of pageWrite
*
* @param dat The page to be flushed to disk. No concurrent calls
* may have the same value of dat.
*
*/
void (*write)(struct stasis_page_handle_t* ph, Page * dat);
/** /**
Read a page from disk. This bypassess the cache, and should only be Read a page from disk. This bypasses the cache, and should only be
called by bufferManager and blobManager. To retrieve a page under called by bufferManager and blobManager. To retrieve a page under
normal circumstances, use loadPage() instead. normal circumstances, use loadPage() instead.
Operation implementors and normal users should never need to call Operation implementors and normal users should never need to call
this routine. this routine.
@param ret A page struct, with id set correctly. The rest of this @param ret A page struct, with id set correctly. The rest of this
struct will be overwritten by pageMap. This method assumes that no struct will be overwritten by pageMap. This method assumes that no
concurrent calls will be passed the same value of ret. concurrent calls will be passed the same value of ret.
@see bufferManager.c for the implementation of pageRead.
@todo pageRead and pageWrite should be stored in a struct returned by @see bufferManager.c for the implementation of read_page.
an initailizer, not in global function pointers.
*/
extern void (*pageRead)(Page * ret);
/**
Force the page file to disk. Pages that have had pageWrite()
called on them are guaranteed to be on disk after this returns.
(Note that bufferManager implementations typically call pageWrite() @todo read_page and pageWrite should be stored in a struct returned by
automatically, so in general, other pages could be written back an initializer, not in global function pointers.
as well...) */
*/ void (*read)(struct stasis_page_handle_t* ph, Page * ret);
extern void (*forcePageFile)(); /**
extern void (*forceRangePageFile)(); Force the page file to disk. Pages that have had pageWrite()
/** called on them are guaranteed to be on disk after this returns.
Force the page file to disk, then close it.
*/
extern void (*closePageFile)();
void pageHandleOpen(stasis_handle_t * handle); (Note that bufferManager implementations typically call pageWrite()
automatically, so in general, other pages could be written back
as well...)
*/
void (*force_file)(struct stasis_page_handle_t* ph);
void (*force_range)(struct stasis_page_handle_t* ph, lsn_t start, lsn_t stop);
/**
Force the page file to disk, then close it.
*/
void (*close)(struct stasis_page_handle_t* ph);
/**
* Pointer to implementation-specific state.
*/
void * impl;
} stasis_page_handle_t;
stasis_page_handle_t * stasis_page_handle_open(struct stasis_handle_t * handle);
#endif //STASIS_PAGEHANDLE_H

2
test/stasis/check_indirect.c
View file

@ -42,7 +42,7 @@ terms specified in this license.
---*/ ---*/
#include "../check_includes.h" #include "../check_includes.h"
#include <stasis/transactional.h>
#include <stasis/bufferManager.h> #include <stasis/bufferManager.h>
#include <stasis/page.h> #include <stasis/page.h>
#include <stasis/page/indirect.h> #include <stasis/page/indirect.h>

3
test/stasis/check_io.c
View file

@ -42,7 +42,8 @@ terms specified in this license.
#include "../check_includes.h" #include "../check_includes.h"
#include <stasis/io/handle.h> #include <stasis/io/handle.h>
#include <stasis/constants.h>
#include <stasis/flags.h>
#include <assert.h> #include <assert.h>
#include <sys/types.h> #include <sys/types.h>
#include <sys/stat.h> #include <sys/stat.h>