mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-16 03:12:43 +00:00
45 lines
1.5 KiB
C++
45 lines
1.5 KiB
C++
#if defined(OS_LINUX)
|
|
#include <stdlib.h>
|
|
|
|
/// Interposing these symbols explicitly. The idea works like this: malloc.cpp compiles to a
|
|
/// dedicated object (namely clickhouse_malloc.o), and it will show earlier in the link command
|
|
/// than malloc libs like libjemalloc.a. As a result, these symbols get picked in time right after.
|
|
|
|
#pragma GCC diagnostic push
|
|
#pragma GCC diagnostic ignored "-Wredundant-decls"
|
|
extern "C"
|
|
{
|
|
void *malloc(size_t size);
|
|
void free(void *ptr);
|
|
void *calloc(size_t nmemb, size_t size);
|
|
void *realloc(void *ptr, size_t size);
|
|
int posix_memalign(void **memptr, size_t alignment, size_t size);
|
|
void *aligned_alloc(size_t alignment, size_t size);
|
|
void *valloc(size_t size);
|
|
void *memalign(size_t alignment, size_t size);
|
|
void *pvalloc(size_t size);
|
|
}
|
|
#pragma GCC diagnostic pop
|
|
|
|
template<typename T>
|
|
inline void ignore(T x __attribute__((unused)))
|
|
{
|
|
}
|
|
|
|
static void dummyFunctionForInterposing() __attribute__((used));
|
|
static void dummyFunctionForInterposing()
|
|
{
|
|
void* dummy;
|
|
/// Suppression for PVS-Studio and clang-tidy.
|
|
free(nullptr); // -V575 NOLINT
|
|
ignore(malloc(0)); // -V575 NOLINT
|
|
ignore(calloc(0, 0)); // -V575 NOLINT
|
|
ignore(realloc(nullptr, 0)); // -V575 NOLINT
|
|
ignore(posix_memalign(&dummy, 0, 0)); // -V575 NOLINT
|
|
ignore(aligned_alloc(0, 0)); // -V575 NOLINT
|
|
ignore(valloc(0)); // -V575 NOLINT
|
|
ignore(memalign(0, 0)); // -V575 NOLINT
|
|
ignore(pvalloc(0)); // -V575 NOLINT
|
|
}
|
|
#endif
|