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-rw-r--r--mysql/mysys/my_malloc.c325
1 files changed, 0 insertions, 325 deletions
diff --git a/mysql/mysys/my_malloc.c b/mysql/mysys/my_malloc.c
deleted file mode 100644
index 230ee5b..0000000
--- a/mysql/mysys/my_malloc.c
+++ /dev/null
@@ -1,325 +0,0 @@
-/* Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; version 2 of the License.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
-
-#include "mysys_priv.h"
-#include "my_sys.h"
-#include "mysys_err.h"
-#include <m_string.h>
-#include "my_thread_local.h"
-
-#ifdef HAVE_PSI_MEMORY_INTERFACE
-#define USE_MALLOC_WRAPPER
-#endif
-
-static void *my_raw_malloc(size_t size, myf my_flags);
-static void my_raw_free(void *ptr);
-
-#ifdef USE_MALLOC_WRAPPER
-struct my_memory_header
-{
- PSI_memory_key m_key;
- uint m_magic;
- size_t m_size;
- PSI_thread *m_owner;
-};
-typedef struct my_memory_header my_memory_header;
-#define HEADER_SIZE 32
-
-#define MAGIC 1234
-
-#define USER_TO_HEADER(P) \
- ( (my_memory_header*) (((char *) P) - HEADER_SIZE ))
-#define HEADER_TO_USER(P) \
- ( ((char*) P) + HEADER_SIZE )
-
-void * my_malloc(PSI_memory_key key, size_t size, myf flags)
-{
- my_memory_header *mh;
- size_t raw_size;
- compile_time_assert(sizeof(my_memory_header) <= HEADER_SIZE);
-
- raw_size= HEADER_SIZE + size;
- mh= (my_memory_header*) my_raw_malloc(raw_size, flags);
- if (likely(mh != NULL))
- {
- void *user_ptr;
- mh->m_magic= MAGIC;
- mh->m_size= size;
- mh->m_key= PSI_MEMORY_CALL(memory_alloc)(key, size, & mh->m_owner);
- user_ptr= HEADER_TO_USER(mh);
- MEM_MALLOCLIKE_BLOCK(user_ptr, size, 0, (flags & MY_ZEROFILL));
- return user_ptr;
- }
- return NULL;
-}
-
-void *
-my_realloc(PSI_memory_key key, void *ptr, size_t size, myf flags)
-{
- my_memory_header *old_mh;
- size_t old_size;
- size_t min_size;
- void *new_ptr;
-
- if (ptr == NULL)
- return my_malloc(key, size, flags);
-
- old_mh= USER_TO_HEADER(ptr);
- DBUG_ASSERT((old_mh->m_key == key) || (old_mh->m_key == PSI_NOT_INSTRUMENTED));
- DBUG_ASSERT(old_mh->m_magic == MAGIC);
-
- old_size= old_mh->m_size;
-
- if (old_size == size)
- return ptr;
-
- new_ptr= my_malloc(key, size, flags);
- if (likely(new_ptr != NULL))
- {
-#ifndef DBUG_OFF
- my_memory_header *new_mh= USER_TO_HEADER(new_ptr);
-#endif
-
- DBUG_ASSERT((new_mh->m_key == key) || (new_mh->m_key == PSI_NOT_INSTRUMENTED));
- DBUG_ASSERT(new_mh->m_magic == MAGIC);
- DBUG_ASSERT(new_mh->m_size == size);
-
- min_size= (old_size < size) ? old_size : size;
- memcpy(new_ptr, ptr, min_size);
- my_free(ptr);
-
- return new_ptr;
- }
- return NULL;
-}
-
-void my_claim(void *ptr)
-{
- my_memory_header *mh;
-
- if (ptr == NULL)
- return;
-
- mh= USER_TO_HEADER(ptr);
- DBUG_ASSERT(mh->m_magic == MAGIC);
- mh->m_key= PSI_MEMORY_CALL(memory_claim)(mh->m_key, mh->m_size, & mh->m_owner);
-}
-
-void my_free(void *ptr)
-{
- my_memory_header *mh;
-
- if (ptr == NULL)
- return;
-
- mh= USER_TO_HEADER(ptr);
- DBUG_ASSERT(mh->m_magic == MAGIC);
- PSI_MEMORY_CALL(memory_free)(mh->m_key, mh->m_size, mh->m_owner);
- /* Catch double free */
- mh->m_magic= 0xDEAD;
- MEM_FREELIKE_BLOCK(ptr, 0);
- my_raw_free(mh);
-}
-
-#else
-
-void *my_malloc(PSI_memory_key key MY_ATTRIBUTE((unused)),
- size_t size, myf my_flags)
-{
- return my_raw_malloc(size, my_flags);
-}
-
-static void *my_raw_realloc(void *oldpoint, size_t size, myf my_flags);
-
-void *my_realloc(PSI_memory_key key MY_ATTRIBUTE((unused)),
- void *ptr, size_t size, myf flags)
-{
- return my_raw_realloc(ptr, size, flags);
-}
-
-void my_claim(void *ptr MY_ATTRIBUTE((unused)))
-{
- /* Empty */
-}
-
-void my_free(void *ptr)
-{
- my_raw_free(ptr);
-}
-#endif
-
-
-/**
- Allocate a sized block of memory.
-
- @param size The size of the memory block in bytes.
- @param flags Failure action modifiers (bitmasks).
-
- @return A pointer to the allocated memory block, or NULL on failure.
-*/
-static void *my_raw_malloc(size_t size, myf my_flags)
-{
- void* point;
- DBUG_ENTER("my_raw_malloc");
- DBUG_PRINT("my",("size: %lu my_flags: %d", (ulong) size, my_flags));
-
- /* Safety */
- if (!size)
- size=1;
-
-#if defined(MY_MSCRT_DEBUG)
- if (my_flags & MY_ZEROFILL)
- point= _calloc_dbg(size, 1, _CLIENT_BLOCK, __FILE__, __LINE__);
- else
- point= _malloc_dbg(size, _CLIENT_BLOCK, __FILE__, __LINE__);
-#else
- if (my_flags & MY_ZEROFILL)
- point= calloc(size, 1);
- else
- point= malloc(size);
-#endif
-
- DBUG_EXECUTE_IF("simulate_out_of_memory",
- {
- free(point);
- point= NULL;
- });
- DBUG_EXECUTE_IF("simulate_persistent_out_of_memory",
- {
- free(point);
- point= NULL;
- });
-
- if (point == NULL)
- {
- set_my_errno(errno);
- if (my_flags & MY_FAE)
- error_handler_hook=fatal_error_handler_hook;
- if (my_flags & (MY_FAE+MY_WME))
- my_error(EE_OUTOFMEMORY, MYF(ME_ERRORLOG + ME_FATALERROR),size);
- DBUG_EXECUTE_IF("simulate_out_of_memory",
- DBUG_SET("-d,simulate_out_of_memory"););
- if (my_flags & MY_FAE)
- exit(1);
- }
-
- DBUG_PRINT("exit",("ptr: %p", point));
- DBUG_RETURN(point);
-}
-
-
-#ifndef USE_MALLOC_WRAPPER
-/**
- @brief wrapper around realloc()
-
- @param oldpoint pointer to currently allocated area
- @param size new size requested, must be >0
- @param my_flags flags
-
- @note if size==0 realloc() may return NULL; my_realloc() treats this as an
- error which is not the intention of realloc()
-*/
-static void *my_raw_realloc(void *oldpoint, size_t size, myf my_flags)
-{
- void *point;
- DBUG_ENTER("my_realloc");
- DBUG_PRINT("my",("ptr: %p size: %lu my_flags: %d", oldpoint,
- (ulong) size, my_flags));
-
- DBUG_ASSERT(size > 0);
- /* These flags are mutually exclusive. */
- DBUG_ASSERT(!((my_flags & MY_FREE_ON_ERROR) &&
- (my_flags & MY_HOLD_ON_ERROR)));
- DBUG_EXECUTE_IF("simulate_out_of_memory",
- point= NULL;
- goto end;);
- if (!oldpoint && (my_flags & MY_ALLOW_ZERO_PTR))
- DBUG_RETURN(my_raw_malloc(size, my_flags));
-#if defined(MY_MSCRT_DEBUG)
- point= _realloc_dbg(oldpoint, size, _CLIENT_BLOCK, __FILE__, __LINE__);
-#else
- point= realloc(oldpoint, size);
-#endif
-#ifndef DBUG_OFF
-end:
-#endif
- if (point == NULL)
- {
- if (my_flags & MY_HOLD_ON_ERROR)
- DBUG_RETURN(oldpoint);
- if (my_flags & MY_FREE_ON_ERROR)
- my_free(oldpoint);
- set_my_errno(errno);
- if (my_flags & (MY_FAE+MY_WME))
- my_error(EE_OUTOFMEMORY, MYF(ME_FATALERROR),
- size);
- DBUG_EXECUTE_IF("simulate_out_of_memory",
- DBUG_SET("-d,simulate_out_of_memory"););
- }
- DBUG_PRINT("exit",("ptr: %p", point));
- DBUG_RETURN(point);
-}
-#endif
-
-/**
- Free memory allocated with my_raw_malloc.
-
- @remark Relies on free being able to handle a NULL argument.
-
- @param ptr Pointer to the memory allocated by my_raw_malloc.
-*/
-static void my_raw_free(void *ptr)
-{
- DBUG_ENTER("my_free");
- DBUG_PRINT("my",("ptr: %p", ptr));
-#if defined(MY_MSCRT_DEBUG)
- _free_dbg(ptr, _CLIENT_BLOCK);
-#else
- free(ptr);
-#endif
- DBUG_VOID_RETURN;
-}
-
-
-void *my_memdup(PSI_memory_key key, const void *from, size_t length, myf my_flags)
-{
- void *ptr;
- if ((ptr= my_malloc(key, length, my_flags)) != 0)
- memcpy(ptr, from, length);
- return ptr;
-}
-
-
-char *my_strdup(PSI_memory_key key, const char *from, myf my_flags)
-{
- char *ptr;
- size_t length= strlen(from)+1;
- if ((ptr= (char*) my_malloc(key, length, my_flags)))
- memcpy(ptr, from, length);
- return ptr;
-}
-
-
-char *my_strndup(PSI_memory_key key, const char *from, size_t length, myf my_flags)
-{
- char *ptr;
- if ((ptr= (char*) my_malloc(key, length+1, my_flags)))
- {
- memcpy(ptr, from, length);
- ptr[length]= 0;
- }
- return ptr;
-}
-
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