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/*
* Copyright (c) 1999-2007 Apple Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this
* file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_LICENSE_HEADER_END@
*/
#ifndef malloc_history_test_stack_logging_h
#define malloc_history_test_stack_logging_h
#import <malloc/malloc.h>
#define stack_logging_type_free 0
#define stack_logging_type_generic 1 /* anything that is not allocation/deallocation */
#define stack_logging_type_alloc 2 /* malloc, realloc, etc... */
#define stack_logging_type_dealloc 4 /* free, realloc, etc... */
// Following flags are absorbed by stack_logging_log_stack()
#define stack_logging_flag_zone 8 /* NSZoneMalloc, etc... */
#define stack_logging_flag_calloc 16 /* multiply arguments to get the size */
#define stack_logging_flag_object 32 /* NSAllocateObject(Class, extraBytes, zone) */
#define stack_logging_flag_cleared 64 /* for NewEmptyHandle */
#define stack_logging_flag_handle 128 /* for Handle (de-)allocation routines */
#define stack_logging_flag_set_handle_size 256 /* (Handle, newSize) treated specially */
/* Macro used to disguise addresses so that leak finding can work */
#define STACK_LOGGING_DISGUISE(address) ((address) ^ 0x00005555) /* nicely idempotent */
extern "C" int stack_logging_enable_logging; /* when clear, no logging takes place */
extern "C" int stack_logging_dontcompact; /* default is to compact; when set does not compact alloc/free logs; useful for tracing history */
extern "C" void stack_logging_log_stack(unsigned type, unsigned arg1, unsigned arg2, unsigned arg3, unsigned result, unsigned num_hot_to_skip);
/* This is the old log-to-memory logger, which is now deprecated. It remains for compatibility with performance tools that haven't been updated to disk_stack_logging_log_stack() yet. */
extern "C" void __disk_stack_logging_log_stack(uint32_t type_flags, uintptr_t zone_ptr, uintptr_t size, uintptr_t ptr_arg, uintptr_t return_val, uint32_t num_hot_to_skip);
/* Fits as the malloc_logger; logs malloc/free/realloc events and can log custom events if called directly */
/* 64-bit-aware stack log access. */
typedef struct {
uint32_t type_flags;
uint64_t stack_identifier;
uint64_t argument;
mach_vm_address_t address;
} mach_stack_logging_record_t;
extern "C" kern_return_t __mach_stack_logging_get_frames(task_t task, mach_vm_address_t address, mach_vm_address_t *stack_frames_buffer, uint32_t max_stack_frames, uint32_t *count);
/* Gets the last allocation record (malloc, realloc, or free) about address */
extern "C" kern_return_t __mach_stack_logging_enumerate_records(task_t task, mach_vm_address_t address, void enumerator(mach_stack_logging_record_t, void *), void *context);
/* Applies enumerator to all records involving address sending context as enumerator's second parameter; if !address, applies enumerator to all records */
extern "C" kern_return_t __mach_stack_logging_frames_for_uniqued_stack(task_t task, uint64_t stack_identifier, mach_vm_address_t *stack_frames_buffer, uint32_t max_stack_frames, uint32_t *count);
/* Given a uniqued_stack fills stack_frames_buffer */
#pragma mark -
#pragma mark Legacy
/* The following is the old 32-bit-only, in-process-memory stack logging. This is deprecated and clients should move to the above 64-bit-aware disk stack logging SPI. */
typedef struct {
unsigned type;
unsigned uniqued_stack;
unsigned argument;
unsigned address; /* disguised, to avoid confusing leaks */
} stack_logging_record_t;
typedef struct {
unsigned overall_num_bytes;
unsigned num_records;
unsigned lock; /* 0 means OK to lock; used for inter-process locking */
unsigned *uniquing_table; /* allocated using vm_allocate() */
/* hashtable organized as (PC, uniqued parent)
Only the second half of the table is active
To enable us to grow dynamically */
unsigned uniquing_table_num_pages; /* number of pages of the table */
unsigned extra_retain_count; /* not used by stack_logging_log_stack */
unsigned filler[2]; /* align to cache lines for better performance */
stack_logging_record_t records[0]; /* records follow here */
} stack_logging_record_list_t;
extern "C" stack_logging_record_list_t *stack_logging_the_record_list;
/* This is the global variable containing all logs */
extern "C" kern_return_t stack_logging_get_frames(task_t task, memory_reader_t reader, vm_address_t address, vm_address_t *stack_frames_buffer, unsigned max_stack_frames, unsigned *num_frames);
/* Gets the last record in stack_logging_the_record_list about address */
#define STACK_LOGGING_ENUMERATION_PROVIDED 1 // temporary to avoid dependencies between projects
extern "C" kern_return_t stack_logging_enumerate_records(task_t task, memory_reader_t reader, vm_address_t address, void enumerator(stack_logging_record_t, void *), void *context);
/* Gets all the records about address;
If !address, gets all records */
extern "C" kern_return_t stack_logging_frames_for_uniqued_stack(task_t task, memory_reader_t reader, unsigned uniqued_stack, vm_address_t *stack_frames_buffer, unsigned max_stack_frames, unsigned *num_frames);
/* Given a uniqued_stack fills stack_frames_buffer */
extern "C" void thread_stack_pcs(vm_address_t *buffer, unsigned max, unsigned *num);
/* Convenience to fill buffer with the PCs of the frames, starting with the hot frames;
num: returned number of frames
*/
#endif
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