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swoole_memory_pool.c
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swoole_memory_pool.c
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/*
+----------------------------------------------------------------------+
| Swoole |
+----------------------------------------------------------------------+
| This source file is subject to version 2.0 of the Apache license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.apache.org/licenses/LICENSE-2.0.html |
| If you did not receive a copy of the Apache2.0 license and are unable|
| to obtain it through the world-wide-web, please send a note to |
| [email protected] so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Author: Xinyu Zhu <[email protected]> |
| shiguangqi <[email protected]> |
| Tianfeng Han <[email protected]> |
+----------------------------------------------------------------------+
*/
#include "php_swoole.h"
enum memory_pool_type
{
memory_pool_type_fixed = 0,
memory_pool_type_ring = 1,
memory_pool_type_global = 2,
memory_pool_type_malloc = 3,
memory_pool_type_emalloc = 4,
};
static PHP_METHOD(swoole_memory_pool, __construct);
static PHP_METHOD(swoole_memory_pool, __destruct);
static PHP_METHOD(swoole_memory_pool, alloc);
static PHP_METHOD(swoole_memory_pool_slice, read);
static PHP_METHOD(swoole_memory_pool_slice, write);
static PHP_METHOD(swoole_memory_pool_slice, __destruct);
ZEND_BEGIN_ARG_INFO_EX(arginfo_swoole_void, 0, 0, 0)
ZEND_END_ARG_INFO()
zend_class_entry *ce;
zend_class_entry *ce_slice;
ZEND_BEGIN_ARG_INFO_EX(arginfo_swoole_memory_pool_construct, 0, 0, 2)
ZEND_ARG_INFO(0, size)
ZEND_ARG_INFO(0, type)
ZEND_ARG_INFO(0, slice_size)
ZEND_ARG_INFO(0, shared)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_swoole_memory_pool_alloc, 0, 0, 0)
ZEND_ARG_INFO(0, size)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_swoole_memory_pool_slice_read, 0, 0, 0)
ZEND_ARG_INFO(0, size)
ZEND_ARG_INFO(0, offset)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_swoole_memory_pool_slice_write, 0, 0, 1)
ZEND_ARG_INFO(0, data)
ZEND_ARG_INFO(0, offset)
ZEND_END_ARG_INFO()
typedef struct
{
size_t size;
size_t slice_size;
uint8_t type;
zend_bool shared;
zend_bool released;
swMemoryPool* pool;
sw_atomic_t slice_count;
} MemoryPool;
typedef struct
{
size_t size;
uint8_t type;
MemoryPool* pool;
void *memory;
} MemorySlice;
static const zend_function_entry swoole_memory_pool_methods[] =
{
PHP_ME(swoole_memory_pool, __construct, arginfo_swoole_memory_pool_construct, ZEND_ACC_PUBLIC | ZEND_ACC_CTOR)
PHP_ME(swoole_memory_pool, __destruct, arginfo_swoole_void, ZEND_ACC_PUBLIC | ZEND_ACC_DTOR)
PHP_ME(swoole_memory_pool, alloc, arginfo_swoole_memory_pool_alloc, ZEND_ACC_PUBLIC)
PHP_FE_END
};
static const zend_function_entry swoole_memory_pool_slice_methods[] =
{
PHP_ME(swoole_memory_pool_slice, read, arginfo_swoole_memory_pool_slice_read, ZEND_ACC_PUBLIC)
PHP_ME(swoole_memory_pool_slice, write, arginfo_swoole_memory_pool_slice_write, ZEND_ACC_PUBLIC)
PHP_ME(swoole_memory_pool_slice, __destruct, arginfo_swoole_void, ZEND_ACC_PUBLIC | ZEND_ACC_DTOR)
PHP_FE_END
};
void swoole_memory_pool_init(int module_number TSRMLS_DC)
{
static zend_class_entry _ce;
INIT_CLASS_ENTRY(_ce, "Swoole\\Memory\\Pool", swoole_memory_pool_methods);
ce = zend_register_internal_class(&_ce TSRMLS_CC);
static zend_class_entry _ce_slice;
INIT_CLASS_ENTRY(_ce_slice, "Swoole\\Memory\\Pool\\Slice", swoole_memory_pool_slice_methods);
ce_slice = zend_register_internal_class(&_ce_slice TSRMLS_CC);
zend_declare_class_constant_long(ce, SW_STRL("TYPE_RING")-1, memory_pool_type_ring TSRMLS_CC);
zend_declare_class_constant_long(ce, SW_STRL("TYPE_GLOBAL")-1, memory_pool_type_global TSRMLS_CC);
zend_declare_class_constant_long(ce, SW_STRL("TYPE_FIXED")-1, memory_pool_type_fixed TSRMLS_CC);
zend_declare_class_constant_long(ce, SW_STRL("TYPE_MALLOC")-1, memory_pool_type_malloc TSRMLS_CC);
zend_declare_class_constant_long(ce, SW_STRL("TYPE_EMALLOC")-1, memory_pool_type_emalloc TSRMLS_CC);
}
static PHP_METHOD(swoole_memory_pool, __construct)
{
zend_long size, type, slice_size;
zend_bool shared = 0;
ZEND_PARSE_PARAMETERS_START(2, 4)
Z_PARAM_LONG(size)
Z_PARAM_LONG(type)
Z_PARAM_OPTIONAL
Z_PARAM_LONG(slice_size)
Z_PARAM_BOOL(shared)
ZEND_PARSE_PARAMETERS_END();
swMemoryPool* pool = NULL;
if (type == memory_pool_type_fixed)
{
void *memory = (shared == 1) ? sw_shm_malloc(size) : sw_malloc(size);
if (memory == NULL)
{
zend_throw_exception(swoole_exception_class_entry_ptr, "malloc failed.", SW_ERROR_MALLOC_FAIL TSRMLS_CC);
RETURN_FALSE;
}
pool = swFixedPool_new2(slice_size, memory, size);
}
else if (type == memory_pool_type_ring)
{
pool = swRingBuffer_new(size, shared);
}
else if (type == memory_pool_type_global)
{
pool = swMemoryGlobal_new(slice_size, shared);
}
else if (type == memory_pool_type_malloc || type == memory_pool_type_malloc)
{
shared = 0;
}
else
{
zend_throw_exception(swoole_exception_class_entry_ptr, "unknown memory pool type.", SW_ERROR_INVALID_PARAMS TSRMLS_CC);
RETURN_FALSE;
}
MemoryPool *mp;
if (shared)
{
mp = (MemoryPool *) SwooleG.memory_pool->alloc(SwooleG.memory_pool, sizeof(MemorySlice));
}
else
{
mp = (MemoryPool *) emalloc(sizeof(MemorySlice));
}
if (mp == NULL)
{
zend_throw_exception(swoole_exception_class_entry_ptr, "malloc failed.", SW_ERROR_MALLOC_FAIL TSRMLS_CC);
RETURN_FALSE;
}
mp->size = size;
mp->slice_size = slice_size;
mp->shared = shared;
mp->type = type;
mp->pool = pool;
mp->slice_count = 0;
mp->released = 0;
swoole_set_object(getThis(), mp);
}
static PHP_METHOD(swoole_memory_pool, alloc)
{
MemoryPool* mp = (MemoryPool*) swoole_get_object(getThis());
zend_long size = mp->slice_size;
ZEND_PARSE_PARAMETERS_START(0, 1)
Z_PARAM_OPTIONAL
Z_PARAM_LONG(size)
ZEND_PARSE_PARAMETERS_END();
if (mp->type != memory_pool_type_fixed && size <= 0)
{
zend_throw_exception(swoole_exception_class_entry_ptr, "invalid size.", SW_ERROR_INVALID_PARAMS TSRMLS_CC);
RETURN_FALSE;
}
void *memory;
if (mp->type == memory_pool_type_malloc)
{
memory = sw_malloc(size);
}
else if (mp->type == memory_pool_type_emalloc)
{
memory = emalloc(size);
}
else
{
memory = mp->pool->alloc(mp->pool, size);
}
if (memory == NULL)
{
RETURN_FALSE;
}
MemorySlice *info = (MemorySlice *) emalloc(sizeof(MemorySlice));
object_init_ex(return_value, ce_slice);
info->pool = mp;
info->size = size;
info->memory = memory;
info->type = mp->type;
sw_atomic_fetch_add(&mp->slice_count, 1);
swoole_set_object(return_value, info);
}
static PHP_METHOD(swoole_memory_pool, __destruct)
{
SW_PREVENT_USER_DESTRUCT;
MemoryPool* mp = (MemoryPool*) swoole_get_object(getThis());
if (mp == NULL)
{
return;
}
swoole_set_object(getThis(), NULL);
if (mp->type == memory_pool_type_malloc || mp->type == memory_pool_type_malloc)
{
efree(mp);
return;
}
mp->released = 1;
if (mp->slice_count == 0)
{
mp->pool->destroy(mp->pool);
if (mp->shared == 0)
{
efree(mp);
}
}
}
static PHP_METHOD(swoole_memory_pool_slice, read)
{
zend_long size = 0;
zend_long offset = 0;
ZEND_PARSE_PARAMETERS_START(0, 2)
Z_PARAM_OPTIONAL
Z_PARAM_LONG(size)
Z_PARAM_LONG(offset)
ZEND_PARSE_PARAMETERS_END();
MemorySlice *info = (MemorySlice *) swoole_get_object(getThis());
if (size <= 0)
{
size = info->size;
}
else if (size > info->size)
{
size = info->size;
swoole_php_error(E_WARNING, "size(%ld) is too big.", size);
}
if (offset < 0 || offset + size > info->size)
{
swoole_php_error(E_WARNING, "offset(%ld) is out of bounds.", offset);
RETURN_FALSE;
}
RETURN_STRINGL((char * )info->memory + offset, size);
}
static PHP_METHOD(swoole_memory_pool_slice, write)
{
zend_string *data;
zend_long size = 0;
zend_long offset = 0;
ZEND_PARSE_PARAMETERS_START(1, 2)
Z_PARAM_STR(data);
Z_PARAM_OPTIONAL
Z_PARAM_LONG(offset)
ZEND_PARSE_PARAMETERS_END();
MemorySlice *info = (MemorySlice *) swoole_get_object(getThis());
size = data->len;
if (size > info->size)
{
swoole_php_error(E_WARNING, "data is too large:%zd.", size);
RETURN_FALSE;
}
if (offset < 0 || offset + size > info->size)
{
swoole_php_error(E_WARNING, "offset(%ld) is out of bounds.", offset);
RETURN_FALSE;
}
memcpy((char *) info->memory + offset, data->val, size);
RETURN_TRUE;
}
static PHP_METHOD(swoole_memory_pool_slice, __destruct)
{
SW_PREVENT_USER_DESTRUCT;
MemorySlice *info = (MemorySlice *) swoole_get_object(getThis());
if (info == NULL)
{
return;
}
MemoryPool *mp = info->pool;
if (info->type == memory_pool_type_malloc)
{
sw_free(info->memory);
}
else if (info->type == memory_pool_type_emalloc)
{
efree(info->memory);
}
else
{
mp->pool->free(mp->pool, info->memory);
sw_atomic_fetch_sub(&mp->slice_count, 1);
if (mp->released && mp->slice_count == 0)
{
mp->pool->destroy(mp->pool);
if (mp->shared == 0)
{
efree(mp);
}
}
}
swoole_set_object(getThis(), NULL);
efree(info);
}