51 lines
1 KiB
C
51 lines
1 KiB
C
#include <lladd/transactional.h>
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#include <stdio.h>
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#include <assert.h>
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int main (int argc, char ** argv) {
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Tinit();
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recordid rootEntry;
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int xid = Tbegin();
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if(TrecordType(xid, ROOT_RECORD) == INVALID_SLOT) {
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// ThashAlloc() will work here as well.
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rootEntry = Talloc(xid, sizeof(int));
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assert(ROOT_RECORD.page == rootEntry.page);
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assert(ROOT_RECORD.slot == rootEntry.slot);
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// rootEntry.size will be sizeof(int) from above.
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int zero = 0;
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Tset(xid, rootEntry, &zero);
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printf("New store; root = 0\n");
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} else {
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// The store already is initialized. If this were a real program,
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// it would use some magic to make sure that it is compatible with
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// the program that created the store...
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rootEntry = ROOT_RECORD;
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rootEntry.size = sizeof(int); // Same as sizeof(int) above.
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int root;
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Tread(xid, rootEntry, &root);
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printf("Old store: %d -> ", root);
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root++;
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printf("%d\n", root);
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Tset(xid, rootEntry, &root);
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}
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Tcommit(xid);
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Tdeinit();
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}
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