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c8e2e0134c
Migrates some VM functions namely, reserve, release, purge, commit, decommit, guards (mark and unmark), and trim to OS layer.
52 lines
1.7 KiB
C
52 lines
1.7 KiB
C
#ifndef JEMALLOC_INTERNAL_OS_H
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#define JEMALLOC_INTERNAL_OS_H
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/*
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* OS layer.
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*
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* Portable code includes this header to reach the OS-touching primitives it
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* needs. Each facility is a module with its own dispatcher (os/<module>.h)
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* that selects an implementation:
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*
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* os/posix/<module>.h - the default, used by every POSIX platform.
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* os/<os>/<module>.h - an override, present ONLY when an OS specializes
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* that module (e.g. windows/file.h).
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*
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* A dispatcher picks the OS-specific file when one exists and otherwise falls
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* back to posix/ (guarded by JEMALLOC_OS_POSIX), so any POSIX platform builds
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* without being enumerated anywhere. A non-POSIX platform with no override
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* hits a #error. Each os/<module>.h also declares the function prototypes
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* its backends must implement, so a backend with a missing or mismatched
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* function fails to compile instead of silently diverging.
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*
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* Adding OS support for a module (only when existing module headers cannot be
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* reused): create os/<os>/<module>.h (and later a matching src body when
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* necessary and add one branch to os/<module>.h. Adding a whole new module:
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* module: create os/<module>.h + os/posix/<module>.h and #include it below.
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*/
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/* Process */
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#include "jemalloc/internal/os/process.h"
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/* File I/O */
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#include "jemalloc/internal/os/file.h"
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/* Time */
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#include "jemalloc/internal/os/time.h"
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/* Sync (mutex) */
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#include "jemalloc/internal/os/mutex.h"
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/* Cond (POSIX background thread only) */
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#include "jemalloc/internal/os/cond.h"
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/* Sigmask (POSIX background thread only) */
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#include "jemalloc/internal/os/sigmask.h"
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/* CPU */
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#include "jemalloc/internal/os/cpu.h"
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/* VM */
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#include "jemalloc/internal/os/vm.h"
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#endif /* JEMALLOC_INTERNAL_OS_H */
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