server-skynet-source-3rd-je.../src/extent_mmap.c

#define JEMALLOC_EXTENT_MMAP_C_
#include "jemalloc/internal/jemalloc_preamble.h"
#include "jemalloc/internal/jemalloc_internal_includes.h"

#include "jemalloc/internal/assert.h"

/******************************************************************************/

void *
extent_alloc_mmap(void *new_addr, size_t size, size_t alignment, bool *zero,
    bool *commit) {
	void *ret = pages_map(new_addr, size, ALIGNMENT_CEILING(alignment,
	    PAGE), commit);
	if (ret == NULL) {
		return NULL;
	}
	assert(ret != NULL);
	*zero = true;
	return ret;
}

bool
extent_dalloc_mmap(void *addr, size_t size) {
	if (config_munmap) {
		pages_unmap(addr, size);
	}
	return !config_munmap;
}
Replace tabs following #define with spaces. This resolves #564. 2017-01-20 13:41:41 +08:00			`#define JEMALLOC_EXTENT_MMAP_C_`
Header refactoring: Split up jemalloc_internal.h This is a biggy. jemalloc_internal.h has been doing multiple jobs for a while now: - The source of system-wide definitions. - The catch-all include file. - The module header file for jemalloc.c This commit splits up this functionality. The system-wide definitions responsibility has moved to jemalloc_preamble.h. The catch-all include file is now jemalloc_internal_includes.h. The module headers for jemalloc.c are now in jemalloc_internal_[externs\|inlines\|types].h, just as they are for the other modules. 2017-04-11 09:17:55 +08:00			`#include "jemalloc/internal/jemalloc_preamble.h"`
			`#include "jemalloc/internal/jemalloc_internal_includes.h"`
Add the --enable-swap configure option. Add malloc_swap_enable(). Add the O/o JEMALLOC_OPTIONS flags, which control memory overcommit. Fix mapped memory stats reporting for arenas. 2010-01-24 18:53:40 +08:00
Header refactoring: move assert.h out of the catch-all 2017-04-12 05:43:12 +08:00			`#include "jemalloc/internal/assert.h"`

Add the --enable-swap configure option. Add malloc_swap_enable(). Add the O/o JEMALLOC_OPTIONS flags, which control memory overcommit. Fix mapped memory stats reporting for arenas. 2010-01-24 18:53:40 +08:00			`/******************************************************************************/`
Add a pages_purge function to wrap madvise(JEMALLOC_MADV_PURGE) calls This will be used to implement the feature on mingw, which doesn't have madvise. 2012-04-19 00:29:43 +08:00
Normalize aligned allocation algorithms. Normalize arena_palloc(), chunk_alloc_mmap_slow(), and chunk_recycle_dss() to use the same algorithm for trimming over-allocation. Add the ALIGNMENT_ADDR2BASE(), ALIGNMENT_ADDR2OFFSET(), and ALIGNMENT_CEILING() macros, and use them where appropriate. Remove the run_size_p parameter from sa2u(). Fix a potential deadlock in chunk_recycle_dss() that was introduced by eae269036c9f702d9fa9be497a1a2aa1be13a29e (Add alignment support to chunk_alloc()). 2012-04-12 09:13:45 +08:00			`void *`
Rename most remaining chunk APIs to extent. 2016-06-02 03:59:02 +08:00			`extent_alloc_mmap(void new_addr, size_t size, size_t alignment, bool zero,`
Update brace style. Add braces around single-line blocks, and remove line breaks before function-opening braces. This resolves #537. 2017-01-16 08:56:30 +08:00			`bool *commit) {`
Support --with-lg-page values larger than system page size. All mappings continue to be PAGE-aligned, even if the system page size is smaller. This change is primarily intended to provide a mechanism for supporting multiple page sizes with the same binary; smaller page sizes work better in conjunction with jemalloc's design. This resolves #467. 2017-04-17 07:23:32 +08:00			`void *ret = pages_map(new_addr, size, ALIGNMENT_CEILING(alignment,`
			`PAGE), commit);`
			`if (ret == NULL) {`
			`return NULL;`
Remove mmap_unaligned. Remove mmap_unaligned, which was used to heuristically decide whether to optimistically call mmap() in such a way that could reduce the total number of system calls. If I remember correctly, the intention of mmap_unaligned was to avoid always executing the slow path in the presence of ASLR. However, that reasoning seems to have been based on a flawed understanding of how ASLR actually works. Although ASLR apparently causes mmap() to ignore address requests, it does not cause total placement randomness, so there is a reasonable expectation that iterative mmap() calls will start returning chunk-aligned mappings once the first chunk has been properly aligned. 2012-04-22 10:17:21 +08:00			`}`
Fix a memory corruption bug in chunk_alloc_dss(). Fix a memory corruption bug in chunk_alloc_dss() that was due to claiming newly allocated memory is zeroed. Reverse order of preference between mmap() and sbrk() to prefer mmap(). Clean up management of 'zero' parameter in chunk_alloc*(). 2012-04-22 04:33:48 +08:00			`assert(ret != NULL);`
			`*zero = true;`
Remove extraneous parens around return arguments. This resolves #540. 2017-01-20 10:15:45 +08:00			`return ret;`
Add the --enable-swap configure option. Add malloc_swap_enable(). Add the O/o JEMALLOC_OPTIONS flags, which control memory overcommit. Fix mapped memory stats reporting for arenas. 2010-01-24 18:53:40 +08:00			`}`

Disable munmap() if it causes VM map holes. Add a configure test to determine whether common mmap()/munmap() patterns cause VM map holes, and only use munmap() to discard unused chunks if the problem does not exist. Unify the chunk caching for mmap and dss. Fix options processing to limit lg_chunk to be large enough that redzones will always fit. 2012-04-13 11:20:58 +08:00			`bool`
Update brace style. Add braces around single-line blocks, and remove line breaks before function-opening braces. This resolves #537. 2017-01-16 08:56:30 +08:00			`extent_dalloc_mmap(void *addr, size_t size) {`
			`if (config_munmap) {`
Rename most remaining chunk APIs to extent. 2016-06-02 03:59:02 +08:00			`pages_unmap(addr, size);`
Update brace style. Add braces around single-line blocks, and remove line breaks before function-opening braces. This resolves #537. 2017-01-16 08:56:30 +08:00			`}`
Remove extraneous parens around return arguments. This resolves #540. 2017-01-20 10:15:45 +08:00			`return !config_munmap;`
Add the --enable-swap configure option. Add malloc_swap_enable(). Add the O/o JEMALLOC_OPTIONS flags, which control memory overcommit. Fix mapped memory stats reporting for arenas. 2010-01-24 18:53:40 +08:00			`}`