405 lines
11 KiB
Text
405 lines
11 KiB
Text
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/**
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* PANDA 3D SOFTWARE
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* Copyright (c) Carnegie Mellon University. All rights reserved.
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*
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* All use of this software is subject to the terms of the revised BSD
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* license. You should have received a copy of this license along
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* with this source code in a file named "LICENSE."
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*
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* @file memoryUsage.I
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* @author drose
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* @date 2000-05-25
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*/
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/**
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* Returns true if the user has Configured the variable 'track-memory-usage'
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* to true, indicating that this class will be in effect. If this returns
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* false, the user has indicated not to do any of this.
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*/
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ALWAYS_INLINE bool MemoryUsage::
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get_track_memory_usage() {
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#ifdef DO_MEMORY_USAGE
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return get_global_ptr()->_track_memory_usage;
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#else
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return false;
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#endif
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}
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/**
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* Indicates that the given pointer has been recently allocated.
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*/
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INLINE void MemoryUsage::
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record_pointer(ReferenceCount *ptr) {
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#ifdef DO_MEMORY_USAGE
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get_global_ptr()->ns_record_pointer(ptr);
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#endif
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}
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/**
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* Indicates that the given pointer has been recently allocated.
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*/
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INLINE void MemoryUsage::
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record_pointer(void *ptr, TypeHandle type) {
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#ifdef DO_MEMORY_USAGE
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get_global_ptr()->ns_record_pointer(ptr, type);
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#endif
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}
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/**
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* Associates the indicated type with the given pointer. This should be
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* called by functions (e.g. the constructor) that know more specifically
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* what type of thing we've got; otherwise, the MemoryUsage database will know
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* only that it's a "ReferenceCount".
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*/
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INLINE void MemoryUsage::
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update_type(ReferenceCount *ptr, TypeHandle type) {
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#ifdef DO_MEMORY_USAGE
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get_global_ptr()->ns_update_type((void *)ptr, type);
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#endif
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}
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/**
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* Associates the indicated type with the given pointer. This flavor of
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* update_type() also passes in the pointer as a TypedObject, and useful for
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* objects that are, in fact, TypedObjects. Once the MemoryUsage database has
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* the pointer as a TypedObject it doesn't need any more help.
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*/
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INLINE void MemoryUsage::
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update_type(ReferenceCount *ptr, TypedObject *typed_ptr) {
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#ifdef DO_MEMORY_USAGE
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get_global_ptr()->ns_update_type((void *)ptr, typed_ptr);
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#endif
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}
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/**
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* Associates the indicated type with the given pointer. This should be
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* called by functions (e.g. the constructor) that know more specifically
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* what type of thing we've got.
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*/
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INLINE void MemoryUsage::
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update_type(void *ptr, TypeHandle type) {
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#ifdef DO_MEMORY_USAGE
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get_global_ptr()->ns_update_type(ptr, type);
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#endif
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}
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/**
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* Indicates that the given pointer has been recently freed.
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*/
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INLINE void MemoryUsage::
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remove_pointer(ReferenceCount *ptr) {
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#ifdef DO_MEMORY_USAGE
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get_global_ptr()->ns_remove_pointer(ptr);
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#endif
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}
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/**
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* Returns true if the MemoryUsage object is currently tracking memory (e.g.
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* track-memory-usage is configured #t).
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*/
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INLINE bool MemoryUsage::
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is_tracking() {
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#ifdef DO_MEMORY_USAGE
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return get_global_ptr()->_track_memory_usage;
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#else
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return false;
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#endif
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}
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/**
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* Returns true if the MemoryUsage object is currently at least counting
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* memory (e.g. this is a Windows debug build), even if it's not fully
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* tracking it.
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*/
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INLINE bool MemoryUsage::
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is_counting() {
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#ifdef DO_MEMORY_USAGE
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return get_global_ptr()->_count_memory_usage;
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#else
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return false;
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#endif
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}
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/**
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* Returns the total number of bytes of allocated memory consumed by C++
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* objects, not including the memory previously frozen.
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*/
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INLINE size_t MemoryUsage::
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get_current_cpp_size() {
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#ifdef DO_MEMORY_USAGE
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return get_global_ptr()->_current_cpp_size;
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#else
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return 0;
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#endif
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}
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/**
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* Returns the total number of bytes of allocated memory consumed by C++
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* objects, including the memory previously frozen.
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*/
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INLINE size_t MemoryUsage::
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get_total_cpp_size() {
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#ifdef DO_MEMORY_USAGE
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return get_global_ptr()->_total_cpp_size;
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#else
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return 0;
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#endif
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}
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/**
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* Returns the total number of bytes allocated from the heap from code within
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* Panda, for individual objects.
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*/
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INLINE size_t MemoryUsage::
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get_panda_heap_single_size() {
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#ifdef DO_MEMORY_USAGE
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return (size_t)AtomicAdjust::get(get_global_ptr()->_total_heap_single_size);
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#else
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return 0;
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#endif
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}
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/**
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* Returns the total number of bytes allocated from the heap from code within
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* Panda, for arrays.
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*/
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INLINE size_t MemoryUsage::
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get_panda_heap_array_size() {
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#ifdef DO_MEMORY_USAGE
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return (size_t)AtomicAdjust::get(get_global_ptr()->_total_heap_array_size);
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#else
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return 0;
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#endif
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}
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/**
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* Returns the extra bytes allocated from the system that are not immediately
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* used for holding allocated objects. This can only be determined if
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* ALTERNATIVE_MALLOC is enabled.
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*/
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INLINE size_t MemoryUsage::
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get_panda_heap_overhead() {
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#if defined(DO_MEMORY_USAGE) && (defined(USE_MEMORY_DLMALLOC) || defined(USE_MEMORY_PTMALLOC2))
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MemoryUsage *mu = get_global_ptr();
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return (size_t)(AtomicAdjust::get(mu->_requested_heap_size) - AtomicAdjust::get(mu->_total_heap_single_size) - AtomicAdjust::get(mu->_total_heap_array_size));
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#else
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return 0;
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#endif
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}
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/**
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* Returns the total number of bytes allocated from the virtual memory pool
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* from code within Panda.
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*/
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INLINE size_t MemoryUsage::
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get_panda_mmap_size() {
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#ifdef DO_MEMORY_USAGE
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return (size_t)AtomicAdjust::get(get_global_ptr()->_total_mmap_size);
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#else
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return 0;
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#endif
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}
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/**
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* Returns the total number of bytes of allocated memory in the heap that
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* Panda didn't seem to be responsible for. This includes a few bytes for
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* very low-level objects (like ConfigVariables) that cannot use Panda memory
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* tracking because they are so very low-level.
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*
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* This also includes all of the memory that might have been allocated by a
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* high-level interpreter, like Python.
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*
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* This number is only available if Panda is able to hook into the actual heap
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* callback.
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*/
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INLINE size_t MemoryUsage::
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get_external_size() {
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#ifdef DO_MEMORY_USAGE
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MemoryUsage *mu = get_global_ptr();
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if (mu->_count_memory_usage) {
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// We can only possibly know this with memory counting, which tracks every
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// malloc call.
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#if defined(USE_MEMORY_DLMALLOC) || defined(USE_MEMORY_PTMALLOC2)
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// With alternative malloc, none of the Panda allocated memory shows up in
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// total_size, so anything there is external.
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return mu->_total_size;
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#else
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// Without alternative malloc, the Panda allocated memory is also included
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// in total_size, so we have to subtract it out.
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return mu->_total_size - (size_t)mu->_total_heap_single_size - (size_t)mu->_total_heap_array_size;
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#endif
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} else {
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return 0;
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}
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#else
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return 0;
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#endif
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}
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/**
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* Returns the total size of allocated memory consumed by the process, as
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* nearly as can be determined.
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*/
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INLINE size_t MemoryUsage::
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get_total_size() {
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#ifdef DO_MEMORY_USAGE
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MemoryUsage *mu = get_global_ptr();
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if (mu->_count_memory_usage) {
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return mu->_total_size + (size_t)mu->_requested_heap_size;
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} else {
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#if defined(USE_MEMORY_DLMALLOC) || defined(USE_MEMORY_PTMALLOC2)
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return (size_t)mu->_requested_heap_size;
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#else
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return (size_t)(AtomicAdjust::get(mu->_total_heap_single_size) + AtomicAdjust::get(mu->_total_heap_array_size));
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#endif
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}
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#else
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return 0;
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#endif
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}
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/**
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* Returns the number of pointers currently active.
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*/
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INLINE int MemoryUsage::
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get_num_pointers() {
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#ifdef DO_MEMORY_USAGE
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return get_global_ptr()->ns_get_num_pointers();
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#else
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return 0;
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#endif
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}
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/**
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* Fills the indicated MemoryUsagePointers with the set of all pointers
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* currently active.
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*/
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INLINE void MemoryUsage::
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get_pointers(MemoryUsagePointers &result) {
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#ifdef DO_MEMORY_USAGE
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get_global_ptr()->ns_get_pointers(result);
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#endif
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}
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/**
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* Fills the indicated MemoryUsagePointers with the set of all pointers of the
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* indicated type currently active.
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*/
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INLINE void MemoryUsage::
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get_pointers_of_type(MemoryUsagePointers &result, TypeHandle type) {
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#ifdef DO_MEMORY_USAGE
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get_global_ptr()->ns_get_pointers_of_type(result, type);
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#endif
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}
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/**
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* Fills the indicated MemoryUsagePointers with the set of all pointers that
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* were allocated within the range of the indicated number of seconds ago.
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*/
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INLINE void MemoryUsage::
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get_pointers_of_age(MemoryUsagePointers &result, double from, double to) {
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#ifdef DO_MEMORY_USAGE
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get_global_ptr()->ns_get_pointers_of_age(result, from, to);
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#endif
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}
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/**
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* Fills the indicated MemoryUsagePointers with the set of all currently
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* active pointers (that is, pointers allocated since the last call to
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* freeze(), and not yet freed) that have a zero reference count.
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*
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* Generally, an undeleted pointer with a zero reference count means its
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* reference count has never been incremented beyond zero (since once it has
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* been incremented, the only way it can return to zero would free the
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* pointer). This may include objects that are allocated statically or on the
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* stack, which are never intended to be deleted. Or, it might represent a
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* programmer or compiler error.
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*
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* This function has the side-effect of incrementing each of their reference
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* counts by one, thus preventing them from ever being freed--but since they
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* hadn't been freed anyway, probably no additional harm is done.
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*/
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INLINE void MemoryUsage::
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get_pointers_with_zero_count(MemoryUsagePointers &result) {
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#ifdef DO_MEMORY_USAGE
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get_global_ptr()->ns_get_pointers_with_zero_count(result);
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#endif
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}
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/**
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* 'Freezes' all pointers currently stored so that they are no longer
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* reported; only newly allocate pointers from this point on will appear in
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* future information requests. This makes it easier to differentiate between
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* continuous leaks and one-time memory allocations.
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*/
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INLINE void MemoryUsage::
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freeze() {
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#ifdef DO_MEMORY_USAGE
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get_global_ptr()->ns_freeze();
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#endif
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}
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/**
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* Shows the breakdown of types of all of the active pointers.
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*/
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INLINE void MemoryUsage::
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show_current_types() {
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#ifdef DO_MEMORY_USAGE
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get_global_ptr()->ns_show_current_types();
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#endif
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}
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/**
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* Shows the breakdown of types of all of the pointers allocated and freed
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* since the last call to freeze().
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*/
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INLINE void MemoryUsage::
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show_trend_types() {
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#ifdef DO_MEMORY_USAGE
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get_global_ptr()->ns_show_trend_types();
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#endif
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}
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/**
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* Shows the breakdown of ages of all of the active pointers.
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*/
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INLINE void MemoryUsage::
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show_current_ages() {
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#ifdef DO_MEMORY_USAGE
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get_global_ptr()->ns_show_current_ages();
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#endif
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}
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/**
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* Shows the breakdown of ages of all of the pointers allocated and freed
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* since the last call to freeze().
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*/
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INLINE void MemoryUsage::
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show_trend_ages() {
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#ifdef DO_MEMORY_USAGE
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get_global_ptr()->ns_show_trend_ages();
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#endif
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}
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/**
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* Returns the pointer to the only MemoryUsage object in the world.
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*/
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INLINE MemoryUsage *MemoryUsage::
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get_global_ptr() {
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|
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#ifdef DO_MEMORY_USAGE
|
||
|
|
#ifdef __GNUC__
|
||
|
|
// Tell the compiler that this is an unlikely branch.
|
||
|
|
if (__builtin_expect(_global_ptr == nullptr, 0)) {
|
||
|
|
#else
|
||
|
|
if (_global_ptr == nullptr) {
|
||
|
|
#endif
|
||
|
|
init_memory_usage();
|
||
|
|
}
|
||
|
|
|
||
|
|
return _global_ptr;
|
||
|
|
#else
|
||
|
|
return nullptr;
|
||
|
|
#endif
|
||
|
|
}
|