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Use memalign for S3 SDK memory allocation to avoid crashes on failure

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This commit is contained in:
obdev
2024-02-09 22:53:20 +00:00
committed by ob-robot
parent 16f0cae203
commit d615bfca30
1 changed files with 10 additions and 2 deletions
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12
deps/oblib/src/lib/restore/ob_storage_s3_base.h vendored
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@ -14,6 +14,7 @@
#define SRC_LIBRARY_SRC_LIB_RESTORE_OB_STORAGE_S3_BASE_H_
#include <openssl/md5.h>
#include <malloc.h>
#include "lib/restore/ob_i_storage.h"
#include "lib/container/ob_array.h"
#include "lib/container/ob_se_array.h"
@ -120,13 +121,20 @@ public:
virtual void *AllocateMemory(std::size_t blockSize,
std::size_t alignment, const char *allocationTag = NULL) override
{
// When memory allocation fails, S3 SDK calls abort, causing a program crash.
// Replaced ob_malloc_align with memalign,, which retries allocation with ob_malloc_retry,
// thus hanging the thread instead of crashing.
// The ob_malloc_retry function exits the loop only when it successfully allocates memory or
// when the requested allocation is greater than or equal to 2GB. Thus, if an allocation of
// 2GB or more fails, it may still cause the program to crash.
lib::ObMallocHookAttrGuard guard(attr_);
UNUSED(allocationTag);
std::size_t real_alignment = MAX(alignment, 16); // should not be smaller than 16
return ob_malloc_align(real_alignment, blockSize, attr_);
return memalign(real_alignment, blockSize);
}
virtual void FreeMemory(void *memoryPtr) override
{
ob_free_align(memoryPtr);
free(memoryPtr);
memoryPtr = NULL;
}