switch_core_memory.c

/*
 * FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
 * Copyright (C) 2005-2014, Anthony Minessale II <anthm@freeswitch.org>
 *
 * Version: MPL 1.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
 *
 * The Initial Developer of the Original Code is
 * Anthony Minessale II <anthm@freeswitch.org>
 * Portions created by the Initial Developer are Copyright (C)
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *
 * Anthony Minessale II <anthm@freeswitch.org>
 * Michael Jerris <mike@jerris.com>
 * Paul D. Tinsley <pdt at jackhammer.org>
 *
 *
 * switch_core_memory.c -- Main Core Library (memory management)
 *
 */

#include <switch.h>
#include "private/switch_apr_pvt.h"
#include "private/switch_core_pvt.h"

//#define DEBUG_ALLOC
//#define DEBUG_ALLOC2
//#define DEBUG_ALLOC_CUTOFF 0 /* Lower to zero to log all pool allocations when DEBUG_ALLOC is defined */
//#define DESTROY_POOLS
//#define INSTANTLY_DESTROY_POOLS
//#define LOCK_MORE
//#define USE_MEM_LOCK
//#define SWITCH_POOL_RECYCLE
#ifndef SWITCH_POOL_RECYCLE
#define PER_POOL_LOCK 1
#endif
#ifndef DEBUG_ALLOC_CUTOFF
#define DEBUG_ALLOC_CUTOFF 500
#endif

static struct {
#ifdef USE_MEM_LOCK
	switch_mutex_t *mem_lock;
#endif
	switch_queue_t *pool_queue;	/* 8 ball break */
	switch_queue_t *pool_recycle_queue;
	switch_memory_pool_t *memory_pool;
	int pool_thread_running;
} memory_manager;

SWITCH_DECLARE(switch_memory_pool_t *) switch_core_session_get_pool(switch_core_session_t *session)
{
	switch_assert(session != NULL);
	switch_assert(session->pool != NULL);
	return session->pool;
}

/* **ONLY** alloc things with this function that **WILL NOT** outlive
   the session itself or expect an earth shattering KABOOM!*/
SWITCH_DECLARE(void *) switch_core_perform_session_alloc(switch_core_session_t *session, switch_size_t memory, const char *file, const char *func,
														 int line)
{
	void *ptr = NULL;
	switch_assert(session != NULL);
	switch_assert(session->pool != NULL);

#ifdef LOCK_MORE
#ifdef USE_MEM_LOCK
	switch_mutex_lock(memory_manager.mem_lock);
#endif
#endif

#ifdef DEBUG_ALLOC
	if (memory > DEBUG_ALLOC_CUTOFF)
		switch_log_printf(SWITCH_CHANNEL_ID_LOG, file, func, line, NULL, SWITCH_LOG_CONSOLE, "%p %p Session Allocate %s %d\n",
						  (void *) session->pool, (void *) session, fspr_pool_tag(session->pool, NULL), (int) memory);
#endif

#if APR_POOL_DEBUG
	ptr = fspr_palloc_debug(session->pool, memory, func);
#else
	ptr = fspr_palloc(session->pool, memory);
#endif
	switch_assert(ptr != NULL);

	memset(ptr, 0, memory);

#ifdef LOCK_MORE
#ifdef USE_MEM_LOCK
	switch_mutex_unlock(memory_manager.mem_lock);
#endif
#endif

	return ptr;
}

/* **ONLY** alloc things with these functions that **WILL NOT** need
   to be freed *EVER* ie this is for *PERMANENT* memory allocation */

SWITCH_DECLARE(void *) switch_core_perform_permanent_alloc(switch_size_t memory, const char *file, const char *func, int line)
{
	void *ptr = NULL;
	switch_assert(memory_manager.memory_pool != NULL);

#ifdef LOCK_MORE
#ifdef USE_MEM_LOCK
	switch_mutex_lock(memory_manager.mem_lock);
#endif
#endif

#ifdef DEBUG_ALLOC
	switch_log_printf(SWITCH_CHANNEL_ID_LOG, file, func, line, NULL, SWITCH_LOG_CONSOLE, "%p Perm Allocate %s %d\n",
					  (void *)memory_manager.memory_pool, fspr_pool_tag(memory_manager.memory_pool, NULL), (int) memory);
#endif

	ptr = fspr_palloc(memory_manager.memory_pool, memory);

	switch_assert(ptr != NULL);
	memset(ptr, 0, memory);

#ifdef LOCK_MORE
#ifdef USE_MEM_LOCK
	switch_mutex_unlock(memory_manager.mem_lock);
#endif
#endif

	return ptr;
}

SWITCH_DECLARE(char *) switch_core_perform_permanent_strdup(const char *todup, const char *file, const char *func, int line)
{
	char *duped = NULL;
	switch_size_t len;
	switch_assert(memory_manager.memory_pool != NULL);

	if (!todup) {
		return NULL;
	}

	if (zstr(todup)) {
		return SWITCH_BLANK_STRING;
	}
#ifdef LOCK_MORE
#ifdef USE_MEM_LOCK
	switch_mutex_lock(memory_manager.mem_lock);
#endif
#endif

	len = strlen(todup) + 1;
	duped = fspr_pstrmemdup(memory_manager.memory_pool, todup, len);
	switch_assert(duped != NULL);

#ifdef DEBUG_ALLOC
	switch_log_printf(SWITCH_CHANNEL_ID_LOG, file, func, line, NULL, SWITCH_LOG_CONSOLE, "%p Perm Allocate %s %d\n",
					  (void *) memory_manager.memory_pool, fspr_pool_tag(memory_manager.memory_pool, NULL), (int) len);
#endif

#ifdef LOCK_MORE
#ifdef USE_MEM_LOCK
	switch_mutex_unlock(memory_manager.mem_lock);
#endif
#endif

	return duped;
}

SWITCH_DECLARE(char *) switch_core_session_sprintf(switch_core_session_t *session, const char *fmt, ...)
{
	va_list ap;
	char *result = NULL;

	va_start(ap, fmt);
	result = switch_core_vsprintf(session->pool, fmt, ap);
	va_end(ap);

	return result;
}

SWITCH_DECLARE(char *) switch_core_session_vsprintf(switch_core_session_t *session, const char *fmt, va_list ap)
{
	return switch_core_vsprintf(session->pool, fmt, ap);
}

SWITCH_DECLARE(char *) switch_core_vsprintf(switch_memory_pool_t *pool, const char *fmt, va_list ap)
{
	char *result = NULL;

	switch_assert(pool != NULL);

#ifdef LOCK_MORE
#ifdef USE_MEM_LOCK
	switch_mutex_lock(memory_manager.mem_lock);
#endif
#endif

	result = fspr_pvsprintf(pool, fmt, ap);
	switch_assert(result != NULL);

#ifdef LOCK_MORE
#ifdef USE_MEM_LOCK
	switch_mutex_unlock(memory_manager.mem_lock);
#endif
#endif

	return result;
}

SWITCH_DECLARE(char *) switch_core_sprintf(switch_memory_pool_t *pool, const char *fmt, ...)
{
	va_list ap;
	char *result;
	va_start(ap, fmt);
	result = switch_core_vsprintf(pool, fmt, ap);
	va_end(ap);

	return result;
}

SWITCH_DECLARE(char *) switch_core_perform_session_strdup(switch_core_session_t *session, const char *todup, const char *file, const char *func, int line)
{
	char *duped = NULL;
#ifdef DEBUG_ALLOC
	switch_size_t len;
#endif

	switch_assert(session != NULL);
	switch_assert(session->pool != NULL);

	if (!todup) {
		return NULL;
	}

	if (zstr(todup)) {
		return SWITCH_BLANK_STRING;
	}
#ifdef LOCK_MORE
#ifdef USE_MEM_LOCK
	switch_mutex_lock(memory_manager.mem_lock);
#endif
#endif



#ifdef DEBUG_ALLOC
	len = strlen(todup);
	if (len > DEBUG_ALLOC_CUTOFF)
		switch_log_printf(SWITCH_CHANNEL_ID_LOG, file, func, line, NULL, SWITCH_LOG_CONSOLE, "%p %p Sess Strdup Allocate %s %ld\n",
						  (void *) session->pool, (void *)session, fspr_pool_tag(session->pool, NULL), strlen(todup));
#endif

	duped = fspr_pstrdup(session->pool, todup);
	switch_assert(duped != NULL);

#ifdef LOCK_MORE
#ifdef USE_MEM_LOCK
	switch_mutex_unlock(memory_manager.mem_lock);
#endif
#endif

	return duped;
}

SWITCH_DECLARE(char *) switch_core_perform_strdup(switch_memory_pool_t *pool, const char *todup, const char *file, const char *func, int line)
{
	return switch_core_perform_strndup(pool, todup, todup ? strlen(todup) + 1 : 0, file, func, line);
}

SWITCH_DECLARE(char *) switch_core_perform_strndup(switch_memory_pool_t *pool, const char *todup, size_t len, const char *file, const char *func, int line)
{
	char *duped = NULL;
	switch_assert(pool != NULL);

	if (!todup) {
		return NULL;
	}

	if (zstr(todup)) {
		return SWITCH_BLANK_STRING;
	}
#ifdef LOCK_MORE
#ifdef USE_MEM_LOCK
	switch_mutex_lock(memory_manager.mem_lock);
#endif
#endif

#ifdef DEBUG_ALLOC
	if (len > DEBUG_ALLOC_CUTOFF)
		switch_log_printf(SWITCH_CHANNEL_ID_LOG, file, func, line, NULL, SWITCH_LOG_CONSOLE, "%p Core Strdup Allocate %s %d\n",
						  (void *) pool, fspr_pool_tag(pool, NULL), (int)len);
#endif

	duped = fspr_pstrmemdup(pool, todup, len);
	switch_assert(duped != NULL);

#ifdef LOCK_MORE
#ifdef USE_MEM_LOCK
	switch_mutex_unlock(memory_manager.mem_lock);
#endif
#endif

	return duped;
}

SWITCH_DECLARE(void) switch_core_memory_pool_set_data(switch_memory_pool_t *pool, const char *key, void *data)
{
	fspr_pool_userdata_set(data, key, NULL, pool);
}

SWITCH_DECLARE(void *) switch_core_memory_pool_get_data(switch_memory_pool_t *pool, const char *key)
{
	void *data = NULL;

	fspr_pool_userdata_get(&data, key, pool);

	return data;
}

SWITCH_DECLARE(void) switch_core_memory_pool_tag(switch_memory_pool_t *pool, const char *tag)
{
	fspr_pool_tag(pool, tag);
}

SWITCH_DECLARE(void) switch_pool_clear(switch_memory_pool_t *p)
{
#ifdef PER_POOL_LOCK
	fspr_thread_mutex_t *my_mutex;
	fspr_pool_mutex_set(p, NULL);
#endif

	fspr_pool_clear(p);

#ifdef PER_POOL_LOCK

	if ((fspr_thread_mutex_create(&my_mutex, APR_THREAD_MUTEX_NESTED, p)) != APR_SUCCESS) {
		abort();
	}

	fspr_pool_mutex_set(p, my_mutex);

#endif

}

#if APR_POOL_DEBUG
static int switch_core_pool_stats_callback(fspr_pool_t *pool, void *data) {
	switch_stream_handle_t *stream = (switch_stream_handle_t *)data;
	size_t size = (size_t)fspr_pool_num_bytes(pool, 1);
	unsigned int alloc = 0, total_alloc = 0, clear = 0;
	char *line = NULL;

	fspr_pool_userdata_get((void**)&line, "line", pool);
	fspr_pool_get_stats(pool, &alloc, &total_alloc, &clear);

	if (stream) {
		stream->write_function(stream, "Pool '%s' size: %" SWITCH_SIZE_T_FMT ", alloc:%d, total_alloc:%d, clear:%d\n", (line ? line : fspr_pool_tag(pool, NULL)), size, alloc, total_alloc, clear);
	} else {
		printf("Pool '%s' size: %" SWITCH_SIZE_T_FMT ", alloc:%d, total_alloc:%d, clear:%d\n", (line ? line : fspr_pool_tag(pool, NULL)), size, alloc, total_alloc, clear);
	}
	return 0;
}
#endif

SWITCH_DECLARE(void) switch_core_pool_stats(switch_stream_handle_t *stream)
{
#if APR_POOL_DEBUG
	if (runtime.memory_pool) {
		fspr_pool_walk_tree_debug(runtime.memory_pool, switch_core_pool_stats_callback, (void *)stream);
	}
#else
	if (stream) {
		stream->write_function(stream, "Unable to get core pool statictics. Please rebuild FreeSWITCH with --enable-pool-debug");
	} else {
		printf("Unable to get core pool statictics. Please rebuild FreeSWITCH with --enable-pool-debug");
	}
#endif
}

SWITCH_DECLARE(switch_status_t) switch_core_perform_new_memory_pool(switch_memory_pool_t **pool, const char *file, const char *func, int line)
{
	char *tmp;
#ifdef INSTANTLY_DESTROY_POOLS
	fspr_pool_create(pool, NULL);
	switch_assert(*pool != NULL);
#else

#ifdef PER_POOL_LOCK
	fspr_allocator_t *my_allocator = NULL;
	fspr_thread_mutex_t *my_mutex;
#else
	void *pop = NULL;
#endif

#ifdef USE_MEM_LOCK
	switch_mutex_lock(memory_manager.mem_lock);
#endif
	switch_assert(pool != NULL);

#ifndef PER_POOL_LOCK
	if (switch_queue_trypop(memory_manager.pool_recycle_queue, &pop) == SWITCH_STATUS_SUCCESS && pop) {
		*pool = (switch_memory_pool_t *) pop;
	} else {
#endif

#ifdef PER_POOL_LOCK
		if ((fspr_allocator_create(&my_allocator)) != APR_SUCCESS) {
			abort();
		}

#if APR_POOL_DEBUG
		if ((fspr_pool_create_ex_debug(pool, memory_manager.memory_pool, NULL, my_allocator, func)) != APR_SUCCESS) {
#else
		if ((fspr_pool_create_ex(pool, NULL, NULL, my_allocator)) != APR_SUCCESS) {
#endif
			abort();
		}

		if ((fspr_thread_mutex_create(&my_mutex, APR_THREAD_MUTEX_NESTED, *pool)) != APR_SUCCESS) {
			abort();
		}

		fspr_allocator_mutex_set(my_allocator, my_mutex);
		fspr_allocator_owner_set(my_allocator, *pool);

		fspr_pool_mutex_set(*pool, my_mutex);

#else
		fspr_pool_create(pool, NULL);
		switch_assert(*pool != NULL);
	}
#endif
#endif

	tmp = switch_core_sprintf(*pool, "%s:%d", file, line);
	fspr_pool_tag(*pool, tmp);

#if APR_POOL_DEBUG
	fspr_pool_userdata_set(tmp, "line", NULL, *pool);
#endif

#ifdef DEBUG_ALLOC2
	switch_log_printf(SWITCH_CHANNEL_ID_LOG, file, func, line, NULL, SWITCH_LOG_CONSOLE, "%p New Pool %s\n", (void *) *pool, fspr_pool_tag(*pool, NULL));
#endif


#ifdef USE_MEM_LOCK
	switch_mutex_unlock(memory_manager.mem_lock);
#endif

	return SWITCH_STATUS_SUCCESS;
}

SWITCH_DECLARE(switch_status_t) switch_core_perform_destroy_memory_pool(switch_memory_pool_t **pool, const char *file, const char *func, int line)
{
	char *tmp;
	const char *tag;
	switch_memory_pool_t *tmp_pool = NULL;
	switch_assert(pool != NULL);
	
	/* In tag we store who calls the pool creation.
	   Now we append it with who calls the pool destroy.
	*/
	if (*pool) {
		tmp_pool = *pool;
		*pool = NULL;

		tag = fspr_pool_tag(tmp_pool, NULL);
		tmp = switch_core_sprintf(tmp_pool, "%s,%s:%d", (tag ? tag : ""), file, line);
		fspr_pool_tag(tmp_pool, tmp);
	}

#ifdef DEBUG_ALLOC2
	switch_log_printf(SWITCH_CHANNEL_ID_LOG, file, func, line, NULL, SWITCH_LOG_CONSOLE, "%p Free Pool %s\n", (void *) tmp_pool, fspr_pool_tag(tmp_pool, NULL));
#endif

#ifdef INSTANTLY_DESTROY_POOLS
#ifdef USE_MEM_LOCK
	switch_mutex_lock(memory_manager.mem_lock);
#endif
	fspr_pool_destroy(tmp_pool);
#ifdef USE_MEM_LOCK
	switch_mutex_unlock(memory_manager.mem_lock);
#endif
#else
	if ((memory_manager.pool_thread_running != 1) || (switch_queue_push(memory_manager.pool_queue, tmp_pool) != SWITCH_STATUS_SUCCESS)) {
#ifdef USE_MEM_LOCK
		switch_mutex_lock(memory_manager.mem_lock);
#endif
#if APR_POOL_DEBUG
		fspr_pool_destroy_debug(tmp_pool, func);
#else
		fspr_pool_destroy(tmp_pool);
#endif
#ifdef USE_MEM_LOCK
		switch_mutex_unlock(memory_manager.mem_lock);
#endif
	}
#endif

	return SWITCH_STATUS_SUCCESS;
}

SWITCH_DECLARE(void *) switch_core_perform_alloc(switch_memory_pool_t *pool, switch_size_t memory, const char *file, const char *func, int line)
{
	void *ptr = NULL;

	switch_assert(pool != NULL);

#ifdef LOCK_MORE
#ifdef USE_MEM_LOCK
	switch_mutex_lock(memory_manager.mem_lock);
#endif
#endif

#ifdef DEBUG_ALLOC
	if (memory > DEBUG_ALLOC_CUTOFF)
		switch_log_printf(SWITCH_CHANNEL_ID_LOG, file, func, line, NULL, SWITCH_LOG_CONSOLE, "%p Core Allocate %s %d\n",
						  (void *) pool, fspr_pool_tag(pool, NULL), (int) memory);
	/*switch_assert(memory < 20000); */
#endif

#if APR_POOL_DEBUG
	ptr = fspr_palloc_debug(pool, memory, func);
#else
	ptr = fspr_palloc(pool, memory);
#endif
	switch_assert(ptr != NULL);
	memset(ptr, 0, memory);

#ifdef LOCK_MORE
#ifdef USE_MEM_LOCK
	switch_mutex_unlock(memory_manager.mem_lock);
#endif
#endif

	return ptr;
}

SWITCH_DECLARE(void) switch_core_memory_reclaim(void)
{
#if !defined(PER_POOL_LOCK) && !defined(INSTANTLY_DESTROY_POOLS)
	switch_memory_pool_t *pool;
	void *pop = NULL;
	switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CONSOLE, "Returning %d recycled memory pool(s)\n",
					  switch_queue_size(memory_manager.pool_recycle_queue) + switch_queue_size(memory_manager.pool_queue));

	while (switch_queue_trypop(memory_manager.pool_recycle_queue, &pop) == SWITCH_STATUS_SUCCESS) {
		pool = (switch_memory_pool_t *) pop;
		if (!pool) {
			break;
		}
#ifdef USE_MEM_LOCK
		switch_mutex_lock(memory_manager.mem_lock);
#endif
		fspr_pool_destroy(pool);
#ifdef USE_MEM_LOCK
		switch_mutex_unlock(memory_manager.mem_lock);
#endif
	}
#endif
	return;
}

static void *SWITCH_THREAD_FUNC pool_thread(switch_thread_t *thread, void *obj)
{
	memory_manager.pool_thread_running = 1;

	while (memory_manager.pool_thread_running == 1) {
		int len = switch_queue_size(memory_manager.pool_queue);

		if (len) {
			int x = len, done = 0;

			switch_yield(1000000);
#ifdef USE_MEM_LOCK
			switch_mutex_lock(memory_manager.mem_lock);
#endif
			while (x > 0) {
				void *pop = NULL;
				if (switch_queue_pop(memory_manager.pool_queue, &pop) != SWITCH_STATUS_SUCCESS || !pop) {
					done = 1;
					break;
				}
#if defined(PER_POOL_LOCK) || defined(DESTROY_POOLS)
#ifdef USE_MEM_LOCK
				switch_mutex_lock(memory_manager.mem_lock);
#endif

#ifdef DEBUG_ALLOC
				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CONSOLE, "%p DESTROY POOL\n", (void *) pop);
#endif
				fspr_pool_destroy(pop);
#ifdef USE_MEM_LOCK
				switch_mutex_unlock(memory_manager.mem_lock);
#endif
#else
				fspr_pool_mutex_set(pop, NULL);
#ifdef DEBUG_ALLOC
				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CONSOLE, "%p DESTROY POOL\n", (void *) pop);
#endif
				fspr_pool_clear(pop);
				if (switch_queue_trypush(memory_manager.pool_recycle_queue, pop) != SWITCH_STATUS_SUCCESS) {
#ifdef USE_MEM_LOCK
					switch_mutex_lock(memory_manager.mem_lock);
#endif
#ifdef DEBUG_ALLOC
				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CONSOLE, "%p DESTROY POOL\n", (void *) pop);
#endif
					fspr_pool_destroy(pop);
#ifdef USE_MEM_LOCK
					switch_mutex_unlock(memory_manager.mem_lock);
#endif

				}
#endif
				x--;
			}
#ifdef USE_MEM_LOCK
			switch_mutex_unlock(memory_manager.mem_lock);
#endif
			if (done) {
				goto done;
			}
		} else {
			switch_yield(1000000);
		}
	}

  done:
	switch_core_memory_reclaim();

	{
		void *pop = NULL;
		while (switch_queue_trypop(memory_manager.pool_queue, &pop) == SWITCH_STATUS_SUCCESS && pop) {
#ifdef USE_MEM_LOCK
			switch_mutex_lock(memory_manager.mem_lock);
#endif
			fspr_pool_destroy(pop);
			pop = NULL;
#ifdef USE_MEM_LOCK
			switch_mutex_unlock(memory_manager.mem_lock);
#endif

		}
	}

	memory_manager.pool_thread_running = 0;

	return NULL;
}

#ifndef INSTANTLY_DESTROY_POOLS
static switch_thread_t *pool_thread_p = NULL;
#endif

void switch_core_memory_stop(void)
{
#ifndef INSTANTLY_DESTROY_POOLS
	switch_status_t st;
	void *pop = NULL;

	switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CONSOLE, "Stopping memory pool queue.\n");

	memory_manager.pool_thread_running = 0;
	switch_thread_join(&st, pool_thread_p);


	while (switch_queue_trypop(memory_manager.pool_queue, &pop) == SWITCH_STATUS_SUCCESS && pop) {
		fspr_pool_destroy(pop);
	}
#endif
}

switch_memory_pool_t *switch_core_memory_init(void)
{
#ifndef INSTANTLY_DESTROY_POOLS
	switch_threadattr_t *thd_attr;
#endif
#ifdef PER_POOL_LOCK
	fspr_allocator_t *my_allocator = NULL;
	fspr_thread_mutex_t *my_mutex;
#endif

	memset(&memory_manager, 0, sizeof(memory_manager));

#ifdef PER_POOL_LOCK
	if ((fspr_allocator_create(&my_allocator)) != APR_SUCCESS) {
		abort();
	}

	if ((fspr_pool_create_ex(&memory_manager.memory_pool, NULL, NULL, my_allocator)) != APR_SUCCESS) {
		fspr_allocator_destroy(my_allocator);
		my_allocator = NULL;
		abort();
	}

	if ((fspr_thread_mutex_create(&my_mutex, APR_THREAD_MUTEX_NESTED, memory_manager.memory_pool)) != APR_SUCCESS) {
		abort();
	}

	fspr_allocator_mutex_set(my_allocator, my_mutex);
	fspr_pool_mutex_set(memory_manager.memory_pool, my_mutex);
	fspr_allocator_owner_set(my_allocator, memory_manager.memory_pool);
	fspr_pool_tag(memory_manager.memory_pool, "core_pool");
#else
	fspr_pool_create(&memory_manager.memory_pool, NULL);
	switch_assert(memory_manager.memory_pool != NULL);
#endif

#ifdef USE_MEM_LOCK
	switch_mutex_init(&memory_manager.mem_lock, SWITCH_MUTEX_NESTED, memory_manager.memory_pool);
#endif

#ifdef INSTANTLY_DESTROY_POOLS
	{
		void *foo;
		foo = (void *) (intptr_t) pool_thread;
	}
#else

	switch_queue_create(&memory_manager.pool_queue, 50000, memory_manager.memory_pool);
	switch_queue_create(&memory_manager.pool_recycle_queue, 50000, memory_manager.memory_pool);

	switch_threadattr_create(&thd_attr, memory_manager.memory_pool);

	switch_threadattr_stacksize_set(thd_attr, SWITCH_THREAD_STACKSIZE);
	switch_thread_create(&pool_thread_p, thd_attr, pool_thread, NULL, memory_manager.memory_pool);

	while (!memory_manager.pool_thread_running) {
		switch_cond_next();
	}
#endif

	return memory_manager.memory_pool;
}

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 * For VIM:
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