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mdbx: shrinking memory-mapping for Windows (initial).

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Change-Id: I3c3c2df0747c788ea36d7764c1e8139098ca62be
This commit is contained in:
Leo Yuriev
2018-01-07 14:37:38 +03:00
parent f10f5b376f
commit 30bd7d3078
5 changed files with 301 additions and 67 deletions
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11
src/osal.h
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@@ -65,6 +65,7 @@
/* Systems includes */
#if defined(_WIN32) || defined(_WIN64)
#include <tlhelp32.h>
#include <windows.h>
#include <winnt.h>
#define HAVE_SYS_STAT_H
@@ -455,6 +456,7 @@ typedef struct mdbx_mmap_param {
size_t length; /* mapping length, but NOT a size of file or DB */
#if defined(_WIN32) || defined(_WIN64)
size_t current; /* mapped region size, e.g. file and DB */
uint64_t filesize;
#endif
#ifdef MDBX_OSAL_SECTION
MDBX_OSAL_SECTION section;
@@ -464,6 +466,15 @@ typedef struct mdbx_mmap_param {
int mdbx_mmap(int flags, mdbx_mmap_t *map, size_t must, size_t limit);
int mdbx_munmap(mdbx_mmap_t *map);
int mdbx_mresize(int flags, mdbx_mmap_t *map, size_t current, size_t wanna);
#if defined(_WIN32) || defined(_WIN64)
typedef struct {
unsigned limit, count;
HANDLE handles[31];
} mdbx_handle_array_t;
int mdbx_suspend_threads_before_remap(MDBX_env *env,
mdbx_handle_array_t **array);
int mdbx_resume_threads_after_remap(mdbx_handle_array_t *array);
#endif /* Windows */
int mdbx_msync(mdbx_mmap_t *map, size_t offset, size_t length, int async);
static __inline mdbx_pid_t mdbx_getpid(void) {