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-rw-r--r--third_party/base/allocator/partition_allocator/partition_alloc.cc45
-rw-r--r--third_party/base/allocator/partition_allocator/partition_alloc.h12
2 files changed, 42 insertions, 15 deletions
diff --git a/third_party/base/allocator/partition_allocator/partition_alloc.cc b/third_party/base/allocator/partition_allocator/partition_alloc.cc
index ff366b861f..e8aad9420c 100644
--- a/third_party/base/allocator/partition_allocator/partition_alloc.cc
+++ b/third_party/base/allocator/partition_allocator/partition_alloc.cc
@@ -1021,22 +1021,29 @@ bool partitionReallocDirectMappedInPlace(PartitionRootGeneric* root,
return true;
}
-void* PartitionReallocGeneric(PartitionRootGeneric* root,
- void* ptr,
- size_t new_size,
- const char* type_name) {
+void* PartitionReallocGenericFlags(PartitionRootGeneric* root,
+ int flags,
+ void* ptr,
+ size_t new_size,
+ const char* type_name) {
#if defined(MEMORY_TOOL_REPLACES_ALLOCATOR)
- return realloc(ptr, new_size);
+ void* result = realloc(ptr, new_size);
+ CHECK(result || flags & PartitionAllocReturnNull);
+ return result;
#else
if (UNLIKELY(!ptr))
- return PartitionAllocGeneric(root, new_size, type_name);
+ return PartitionAllocGenericFlags(root, flags, new_size, type_name);
if (UNLIKELY(!new_size)) {
PartitionFreeGeneric(root, ptr);
- return 0;
+ return nullptr;
}
- if (new_size > kGenericMaxDirectMapped)
- PartitionExcessiveAllocationSize();
+ if (new_size > kGenericMaxDirectMapped) {
+ if (flags & PartitionAllocReturnNull)
+ return nullptr;
+ else
+ PartitionExcessiveAllocationSize();
+ }
DCHECK(PartitionPointerIsValid(PartitionCookieFreePointerAdjust(ptr)));
@@ -1069,12 +1076,19 @@ void* PartitionReallocGeneric(PartitionRootGeneric* root,
// |new_size| via the raw size pointer.
if (PartitionPageGetRawSizePtr(page))
PartitionCookieWriteValue(static_cast<char*>(ptr) + new_size);
-#endif
+#endif // DCHECK_IS_ON()
return ptr;
}
// This realloc cannot be resized in-place. Sadness.
- void* ret = PartitionAllocGeneric(root, new_size, type_name);
+ void* ret = PartitionAllocGenericFlags(root, flags, new_size, type_name);
+ if (!ret) {
+ if (flags & PartitionAllocReturnNull)
+ return nullptr;
+ else
+ PartitionExcessiveAllocationSize();
+ }
+
size_t copy_size = actual_old_size;
if (new_size < copy_size)
copy_size = new_size;
@@ -1082,7 +1096,14 @@ void* PartitionReallocGeneric(PartitionRootGeneric* root,
memcpy(ret, ptr, copy_size);
PartitionFreeGeneric(root, ptr);
return ret;
-#endif
+#endif // defined(MEMORY_TOOL_REPLACES_ALLOCATOR)
+}
+
+void* PartitionReallocGeneric(PartitionRootGeneric* root,
+ void* ptr,
+ size_t new_size,
+ const char* type_name) {
+ return PartitionReallocGenericFlags(root, 0, ptr, new_size, type_name);
}
static size_t PartitionPurgePage(PartitionPage* page, bool discard) {
diff --git a/third_party/base/allocator/partition_allocator/partition_alloc.h b/third_party/base/allocator/partition_allocator/partition_alloc.h
index 87db329af2..69fba97d62 100644
--- a/third_party/base/allocator/partition_allocator/partition_alloc.h
+++ b/third_party/base/allocator/partition_allocator/partition_alloc.h
@@ -432,9 +432,15 @@ BASE_EXPORT NOINLINE void* PartitionAllocSlowPath(PartitionRootBase*,
size_t,
PartitionBucket*);
BASE_EXPORT NOINLINE void PartitionFreeSlowPath(PartitionPage*);
-BASE_EXPORT NOINLINE void* PartitionReallocGeneric(PartitionRootGeneric*,
- void*,
- size_t,
+BASE_EXPORT NOINLINE void* PartitionReallocGenericFlags(
+ PartitionRootGeneric* root,
+ int flags,
+ void* ptr,
+ size_t new_size,
+ const char* type_name);
+BASE_EXPORT NOINLINE void* PartitionReallocGeneric(PartitionRootGeneric* root,
+ void* ptr,
+ size_t new_size,
const char* type_name);
BASE_EXPORT void PartitionDumpStats(PartitionRoot*,