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c11: Implement c11/time.h with c11/impl/time.c

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Create c11/time.h instead of put timespec_get in `c11/threads.h`

Creating impl folder is used to avoid `#include <time.h>` point the c11/time.h file

Detecting if `struct timespec` present with meson
Define TIME_UTC in `c11/time.h` instead `c11/threads.h`
Define `struct timespec` in `c11/time.h` when not present.
Implement timespec_get in c11/impl/time.c instead threads.h

Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15497>
This commit is contained in:
Yonggang Luo 2022-02-19 13:19:08 +08:00 committed by Marge Bot
parent fe01757ddf
commit b2ddec4e98
13 changed files with 144 additions and 53 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
include/c11/threads.h
View File

@ -29,11 +29,7 @@
#ifndef EMULATED_THREADS_H_INCLUDED_
#define EMULATED_THREADS_H_INCLUDED_
#include <time.h>
#ifndef TIME_UTC
#define TIME_UTC 1
#endif
#include "c11/time.h"
/*---------------------------- types ----------------------------*/
typedef void (*tss_dtor_t)(void*);

16
include/c11/threads_posix.h
View File

@ -378,19 +378,3 @@ tss_set(tss_t key, void *val)
{
return (pthread_setspecific(key, val) == 0) ? thrd_success : thrd_error;
}
/*-------------------- 7.25.7 Time functions --------------------*/
// 7.25.6.1
#ifndef HAVE_TIMESPEC_GET
static inline int
timespec_get(struct timespec *ts, int base)
{
if (!ts) return 0;
if (base == TIME_UTC) {
clock_gettime(CLOCK_REALTIME, ts);
return base;
}
return 0;
}
#endif

27
include/c11/threads_win32.h
View File

@ -128,7 +128,6 @@ static time_t impl_timespec2msec(const struct timespec *ts)
return (ts->tv_sec * 1000U) + (ts->tv_nsec / 1000000L);
}
#ifdef HAVE_TIMESPEC_GET
static DWORD impl_abs2relmsec(const struct timespec *abs_time)
{
const time_t abs_ms = impl_timespec2msec(abs_time);
@ -138,7 +137,6 @@ static DWORD impl_abs2relmsec(const struct timespec *abs_time)
const DWORD rel_ms = (abs_ms > now_ms) ? (DWORD)(abs_ms - now_ms) : 0;
return rel_ms;
}
#endif
#ifdef EMULATED_THREADS_USE_NATIVE_CALL_ONCE
struct impl_call_once_param { void (*func)(void); };
@ -253,14 +251,10 @@ cnd_timedwait(cnd_t *cond, mtx_t *mtx, const struct timespec *abs_time)
assert(cond != NULL);
assert(mtx != NULL);
assert(abs_time != NULL);
#ifdef HAVE_TIMESPEC_GET
const DWORD timeout = impl_abs2relmsec(abs_time);
if (SleepConditionVariableCS(cond, mtx, timeout))
return thrd_success;
return (GetLastError() == ERROR_TIMEOUT) ? thrd_timedout : thrd_error;
#else
return thrd_error;
#endif
}
// 7.25.3.6
@ -312,7 +306,6 @@ mtx_timedlock(mtx_t *mtx, const struct timespec *ts)
{
assert(mtx != NULL);
assert(ts != NULL);
#ifdef HAVE_TIMESPEC_GET
while (mtx_trylock(mtx) != thrd_success) {
if (impl_abs2relmsec(ts) == 0)
return thrd_timedout;
@ -320,9 +313,6 @@ mtx_timedlock(mtx_t *mtx, const struct timespec *ts)
thrd_yield();
}
return thrd_success;
#else
return thrd_error;
#endif
}
// 7.25.4.5
@ -502,20 +492,3 @@ tss_set(tss_t key, void *val)
{
return TlsSetValue(key, val) ? thrd_success : thrd_error;
}
/*-------------------- 7.25.7 Time functions --------------------*/
// 7.25.6.1
#ifndef HAVE_TIMESPEC_GET
static inline int
timespec_get(struct timespec *ts, int base)
{
assert(ts != NULL);
if (base == TIME_UTC) {
ts->tv_sec = time(NULL);
ts->tv_nsec = 0;
return base;
}
return 0;
}
#endif

4
meson.build
View File

@ -1453,6 +1453,10 @@ foreach f, prefix: functions_to_detect
endif
endforeach
if cc.has_header_symbol('time.h', 'struct timespec')
pre_args += '-DHAVE_STRUCT_TIMESPEC'
endif
if cc.has_header_symbol('errno.h', 'program_invocation_name',
args : '-D_GNU_SOURCE')
pre_args += '-DHAVE_PROGRAM_INVOCATION_NAME'

38
src/c11/impl/meson.build Normal file
View File

@ -0,0 +1,38 @@
# Copyright © 2022 Yonggang Luo
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
files_mesa_util_c11 = files(
'time.c',
)
_libmesa_util_c11 = static_library(
'mesa_util_c11',
[files_mesa_util_c11],
include_directories : [inc_include, inc_src],
c_args : [c_msvc_compat_args],
gnu_symbol_visibility : 'hidden',
build_by_default : false
)
idep_mesautilc11 = declare_dependency(
link_with : _libmesa_util_c11,
include_directories : [inc_include, inc_src],
dependencies : [dep_clock, dep_thread, dep_atomic, dep_m, dep_valgrind],
)

43
src/c11/impl/time.c Normal file
View File

@ -0,0 +1,43 @@
/*
* Copyright 2022 Yonggang Luo
* SPDX-License-Identifier: MIT
*
* C11 <time.h> implementation
*/
#include "c11/time.h"
#ifndef HAVE_TIMESPEC_GET
#if defined(_WIN32) && !defined(__CYGWIN__)
#include <assert.h>
int
timespec_get(struct timespec *ts, int base)
{
assert(ts != NULL);
if (base == TIME_UTC) {
ts->tv_sec = time(NULL);
ts->tv_nsec = 0;
return base;
}
return 0;
}
#else
int
timespec_get(struct timespec *ts, int base)
{
if (!ts)
return 0;
if (base == TIME_UTC) {
clock_gettime(CLOCK_REALTIME, ts);
return base;
}
return 0;
}
#endif
#endif /* !HAVE_TIMESPEC_GET */

51
src/c11/time.h Normal file
View File

@ -0,0 +1,51 @@
/*
* Copyright 2022 Yonggang Luo
* SPDX-License-Identifier: MIT
*
* C11 <time.h> emulation library
*/
#ifndef C11_TIME_H_INCLUDED_
#define C11_TIME_H_INCLUDED_
#include <time.h>
/*---------------------------- macros ---------------------------*/
#ifndef TIME_UTC
#define TIME_UTC 1
#endif
#ifdef __cplusplus
extern "C" {
#endif
/*---------------------------- types ----------------------------*/
/*
* On MINGW `struct timespec` present but `timespec_get` may not present;
* On MSVC `struct timespec` and `timespec_get` present at the same time;
* So detecting `HAVE_STRUCT_TIMESPEC` in meson script dynamically.
*/
#ifndef HAVE_STRUCT_TIMESPEC
struct timespec
{
time_t tv_sec; // Seconds - >= 0
long tv_nsec; // Nanoseconds - [0, 999999999]
};
#endif
/*-------------------------- functions --------------------------*/
#ifndef HAVE_TIMESPEC_GET
/*-------------------- 7.25.7 Time functions --------------------*/
// 7.25.6.1
int
timespec_get(struct timespec *ts, int base);
#endif
#ifdef __cplusplus
}
#endif
#endif /* C11_TIME_H_INCLUDED_ */

2
src/mapi/es1api/meson.build
View File

@ -56,7 +56,7 @@ libglesv1_cm = shared_library(
link_args : [ld_args_gc_sections],
include_directories : [inc_src, inc_include, inc_mapi],
link_with : libglapi,
dependencies : [dep_thread, dep_libdrm, dep_m, dep_dl],
dependencies : [dep_thread, dep_libdrm, dep_m, dep_dl, idep_mesautilc11],
soversion : host_machine.system() == 'windows' ? '' : '1',
version : '1.1.0',
darwin_versions : '3.0.0',

2
src/mapi/es2api/meson.build
View File

@ -56,7 +56,7 @@ libgles2 = shared_library(
link_args : [ld_args_gc_sections],
include_directories : [inc_src, inc_include, inc_mapi],
link_with : libglapi,
dependencies : [dep_thread, dep_libdrm, dep_m, dep_dl],
dependencies : [dep_thread, dep_libdrm, dep_m, dep_dl, idep_mesautilc11],
soversion : host_machine.system() == 'windows' ? '' : '2',
version : '2.0.0',
darwin_versions : '3.0.0',

2
src/mapi/glapi/meson.build
View File

@ -81,7 +81,7 @@ libglapi_static = static_library(
static_glapi_files,
include_directories : [inc_mesa, inc_include, inc_src, inc_mapi],
c_args : [c_msvc_compat_args, static_glapi_args],
dependencies : [dep_thread, dep_selinux],
dependencies : [dep_thread, dep_selinux, idep_mesautilc11],
build_by_default : false,
)

4
src/mapi/shared-glapi/meson.build
View File

@ -54,7 +54,7 @@ libglapi = shared_library(
gnu_symbol_visibility : 'hidden',
link_args : [ld_args_gc_sections],
include_directories : [inc_src, inc_include, inc_mapi],
dependencies : [dep_thread, dep_selinux],
dependencies : [dep_thread, dep_selinux, idep_mesautilc11],
soversion : host_machine.system() == 'windows' ? '' : '0',
version : '0.0.0',
name_prefix : 'lib',
@ -71,7 +71,7 @@ if with_any_opengl and with_tests
cpp_args : [cpp_msvc_compat_args],
include_directories : [inc_src, inc_include, inc_mapi],
link_with : [libglapi],
dependencies : [dep_thread, idep_gtest],
dependencies : [dep_thread, idep_gtest, idep_mesautilc11],
),
suite : ['mapi'],
protocol : gtest_test_protocol,

1
src/meson.build
View File

@ -64,6 +64,7 @@ else
idep_getopt = null_dep
endif
subdir('android_stub')
subdir('c11/impl')
subdir('util')
subdir('mapi')
# TODO: opengl

1
src/util/meson.build
View File

@ -206,6 +206,7 @@ deps_for_libmesa_util = [
dep_zstd,
dep_dl,
dep_unwind,
idep_mesautilc11
]
if with_platform_android