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https://github.com/jerryscript-project/jerryscript.git
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3a78d30897
Currently the static variables of the allocator are moved into a global structure. The future plan is supporting multiple context models with different advantages and disadvantages. Users can select the most appropriate context model for their own use case. This context model must be selected at compile time using compiler defines. Currently only one model is implemented, which will be the default context model: the context is stored in global variables, so only a single context is available which always exists. JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
144 lines
3.5 KiB
C
144 lines
3.5 KiB
C
/* Copyright 2014-2016 Samsung Electronics Co., Ltd.
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* Copyright 2016 University of Szeged.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* Allocator implementation
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*/
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#include "jcontext.h"
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#include "jmem-allocator.h"
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#include "jmem-heap.h"
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#include "jmem-poolman.h"
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#include "jrt-libc-includes.h"
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#define JMEM_ALLOCATOR_INTERNAL
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#include "jmem-allocator-internal.h"
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/**
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* Initialize memory allocators.
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*/
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void
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jmem_init (void)
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{
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jmem_heap_init ();
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jmem_pools_init ();
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} /* jmem_init */
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/**
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* Finalize memory allocators.
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*/
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void
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jmem_finalize (bool is_show_mem_stats) /**< show heap memory stats
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before finalization? */
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{
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jmem_pools_finalize ();
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#ifdef JMEM_STATS
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if (is_show_mem_stats)
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{
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jmem_stats_print ();
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}
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#else /* !JMEM_STATS */
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(void) is_show_mem_stats;
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#endif /* JMEM_STATS */
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jmem_heap_finalize ();
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} /* jmem_finalize */
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/**
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* Compress pointer
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*
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* @return packed pointer
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*/
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uintptr_t
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jmem_compress_pointer (const void *pointer_p) /**< pointer to compress */
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{
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JERRY_ASSERT (jmem_is_heap_pointer (pointer_p));
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return jmem_heap_compress_pointer (pointer_p);
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} /* jmem_compress_pointer */
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/**
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* Decompress pointer
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*
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* @return unpacked pointer
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*/
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void *
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jmem_decompress_pointer (uintptr_t compressed_pointer) /**< pointer to decompress */
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{
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return jmem_heap_decompress_pointer (compressed_pointer);
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} /* jmem_decompress_pointer */
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/**
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* Register specified 'try to give memory back' callback routine
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*/
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void
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jmem_register_free_unused_memory_callback (jmem_free_unused_memory_callback_t callback) /**< callback routine */
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{
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/* Currently only one callback is supported */
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JERRY_ASSERT (JERRY_CONTEXT (jmem_free_unused_memory_callback) == NULL);
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JERRY_CONTEXT (jmem_free_unused_memory_callback) = callback;
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} /* jmem_register_free_unused_memory_callback */
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/**
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* Unregister specified 'try to give memory back' callback routine
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*/
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void
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jmem_unregister_free_unused_memory_callback (jmem_free_unused_memory_callback_t callback) /**< callback routine */
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{
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/* Currently only one callback is supported */
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JERRY_ASSERT (JERRY_CONTEXT (jmem_free_unused_memory_callback) == callback);
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JERRY_CONTEXT (jmem_free_unused_memory_callback) = NULL;
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} /* jmem_unregister_free_unused_memory_callback */
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/**
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* Run 'try to give memory back' callbacks with specified severity
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*/
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void
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jmem_run_free_unused_memory_callbacks (jmem_free_unused_memory_severity_t severity) /**< severity of the request */
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{
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if (JERRY_CONTEXT (jmem_free_unused_memory_callback) != NULL)
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{
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JERRY_CONTEXT (jmem_free_unused_memory_callback) (severity);
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}
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jmem_pools_collect_empty ();
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} /* jmem_run_free_unused_memory_callbacks */
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#ifdef JMEM_STATS
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/**
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* Reset peak values in memory usage statistics
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*/
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void
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jmem_stats_reset_peak (void)
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{
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jmem_heap_stats_reset_peak ();
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jmem_pools_stats_reset_peak ();
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} /* jmem_stats_reset_peak */
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/**
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* Print memory usage statistics
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*/
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void
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jmem_stats_print (void)
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{
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jmem_heap_stats_print ();
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jmem_pools_stats_print ();
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} /* jmem_stats_print */
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#endif /* JMEM_STATS */
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