mirror of https://gitlab.freedesktop.org/mesa/mesa
util: Add os_create_anonymous_file support on win32
Signed-off-by: Yonggang Luo <luoyonggang@gmail.com> Reviewed-by: Jesse Natalie <jenatali@microsoft.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/18017>
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@ -27,9 +27,10 @@
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* Based on weston shared/os-compatibility.c
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*/
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#ifndef _WIN32
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#include "anon_file.h"
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#ifndef _WIN32
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#include <unistd.h>
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#include <fcntl.h>
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#include <errno.h>
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@ -112,7 +113,7 @@ create_tmpfile_cloexec(char *tmpname)
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* SCM_RIGHTS methods.
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*/
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int
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os_create_anonymous_file(off_t size, const char *debug_name)
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os_create_anonymous_file(int64_t size, const char *debug_name)
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{
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int fd, ret;
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#if defined(HAVE_MEMFD_CREATE)
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@ -155,7 +156,7 @@ os_create_anonymous_file(off_t size, const char *debug_name)
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if (fd < 0)
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return -1;
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ret = ftruncate(fd, size);
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ret = ftruncate(fd, (off_t)size);
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if (ret < 0) {
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close(fd);
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return -1;
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@ -163,4 +164,17 @@ os_create_anonymous_file(off_t size, const char *debug_name)
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return fd;
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}
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#else
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#include <windows.h>
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#include <io.h>
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int
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os_create_anonymous_file(int64_t size, const char *debug_name)
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{
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(void)debug_name;
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HANDLE h = CreateFileMappingW(INVALID_HANDLE_VALUE, NULL,
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PAGE_READWRITE, (size >> 32), size & 0xFFFFFFFF, NULL);
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return _open_osfhandle((intptr_t)h, 0);
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}
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#endif
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@ -26,8 +26,9 @@
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#ifndef _ANON_FILE_H_
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#define _ANON_FILE_H_
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#include <sys/types.h>
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#include <stdint.h>
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int os_create_anonymous_file(off_t size, const char *debug_name);
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/* On win32, off_t is only 32 bit, so always using 64 bit size */
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int os_create_anonymous_file(int64_t size, const char *debug_name);
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#endif
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