diff options
Diffstat (limited to 'vendor/zgui/libs/winpthreads/src/misc.c')
| -rw-r--r-- | vendor/zgui/libs/winpthreads/src/misc.c | 197 |
1 files changed, 0 insertions, 197 deletions
diff --git a/vendor/zgui/libs/winpthreads/src/misc.c b/vendor/zgui/libs/winpthreads/src/misc.c deleted file mode 100644 index 457bc86..0000000 --- a/vendor/zgui/libs/winpthreads/src/misc.c +++ /dev/null @@ -1,197 +0,0 @@ -/* - Copyright (c) 2011-2016 mingw-w64 project - - 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. -*/ - -#include <windows.h> -#include "pthread.h" -#include "misc.h" - -void (WINAPI *_pthread_get_system_time_best_as_file_time) (LPFILETIME) = NULL; -static ULONGLONG (WINAPI *_pthread_get_tick_count_64) (VOID); - -#if defined(__GNUC__) || defined(__clang__) -__attribute__((constructor)) -#endif -static void winpthreads_init(void) -{ - HMODULE mod = GetModuleHandleA("kernel32.dll"); - if (mod) - { - _pthread_get_tick_count_64 = - (ULONGLONG (WINAPI *)(VOID))(void*) GetProcAddress(mod, "GetTickCount64"); - - /* <1us precision on Windows 10 */ - _pthread_get_system_time_best_as_file_time = - (void (WINAPI *)(LPFILETIME))(void*) GetProcAddress(mod, "GetSystemTimePreciseAsFileTime"); - } - - if (!_pthread_get_system_time_best_as_file_time) - /* >15ms precision on Windows 10 */ - _pthread_get_system_time_best_as_file_time = GetSystemTimeAsFileTime; -} - -#if defined(_MSC_VER) && !defined(__clang__) -/* Force a reference to __xc_t to prevent whole program optimization - * from discarding the variable. */ - -/* On x86, symbols are prefixed with an underscore. */ -# if defined(_M_IX86) -# pragma comment(linker, "/include:___xc_t") -# else -# pragma comment(linker, "/include:__xc_t") -# endif - -#pragma section(".CRT$XCT", long, read) -__declspec(allocate(".CRT$XCT")) -extern const _PVFV __xc_t; -const _PVFV __xc_t = winpthreads_init; -#endif - -unsigned long long _pthread_time_in_ms(void) -{ - FILETIME ft; - - GetSystemTimeAsFileTime(&ft); - return (((unsigned long long)ft.dwHighDateTime << 32) + ft.dwLowDateTime - - 0x19DB1DED53E8000ULL) / 10000ULL; -} - -unsigned long long _pthread_time_in_ms_from_timespec(const struct timespec *ts) -{ - unsigned long long t = (unsigned long long) ts->tv_sec * 1000LL; - /* The +999999 is here to ensure that the division always rounds up */ - t += (unsigned long long) (ts->tv_nsec + 999999) / 1000000; - - return t; -} - -unsigned long long _pthread_rel_time_in_ms(const struct timespec *ts) -{ - unsigned long long t1 = _pthread_time_in_ms_from_timespec(ts); - unsigned long long t2 = _pthread_time_in_ms(); - - /* Prevent underflow */ - if (t1 < t2) return 0; - return t1 - t2; -} - -static unsigned long long -_pthread_get_tick_count (long long *frequency) -{ - if (_pthread_get_tick_count_64 != NULL) - return _pthread_get_tick_count_64 (); - - LARGE_INTEGER freq, timestamp; - - if (*frequency == 0) - { - if (QueryPerformanceFrequency (&freq)) - *frequency = freq.QuadPart; - else - *frequency = -1; - } - - if (*frequency > 0 && QueryPerformanceCounter (×tamp)) - return timestamp.QuadPart / (*frequency / 1000); - - /* Fallback */ - return GetTickCount (); -} - -/* A wrapper around WaitForSingleObject() that ensures that - * the wait function does not time out before the time - * actually runs out. This is needed because WaitForSingleObject() - * might have poor accuracy, returning earlier than expected. - * On the other hand, returning a bit *later* than expected - * is acceptable in a preemptive multitasking environment. - */ -unsigned long -_pthread_wait_for_single_object (void *handle, unsigned long timeout) -{ - DWORD result; - unsigned long long start_time, end_time; - unsigned long wait_time; - long long frequency = 0; - - if (timeout == INFINITE || timeout == 0) - return WaitForSingleObject ((HANDLE) handle, (DWORD) timeout); - - start_time = _pthread_get_tick_count (&frequency); - end_time = start_time + timeout; - wait_time = timeout; - - do - { - unsigned long long current_time; - - result = WaitForSingleObject ((HANDLE) handle, (DWORD) wait_time); - if (result != WAIT_TIMEOUT) - break; - - current_time = _pthread_get_tick_count (&frequency); - if (current_time >= end_time) - break; - - wait_time = (DWORD) (end_time - current_time); - } while (TRUE); - - return result; -} - -/* A wrapper around WaitForMultipleObjects() that ensures that - * the wait function does not time out before the time - * actually runs out. This is needed because WaitForMultipleObjects() - * might have poor accuracy, returning earlier than expected. - * On the other hand, returning a bit *later* than expected - * is acceptable in a preemptive multitasking environment. - */ -unsigned long -_pthread_wait_for_multiple_objects (unsigned long count, void **handles, unsigned int all, unsigned long timeout) -{ - DWORD result; - unsigned long long start_time, end_time; - unsigned long wait_time; - long long frequency = 0; - - if (timeout == INFINITE || timeout == 0) - return WaitForMultipleObjects ((DWORD) count, (HANDLE *) handles, all, (DWORD) timeout); - - start_time = _pthread_get_tick_count (&frequency); - end_time = start_time + timeout; - wait_time = timeout; - - do - { - unsigned long long current_time; - - result = WaitForMultipleObjects ((DWORD) count, (HANDLE *) handles, all, (DWORD) wait_time); - if (result != WAIT_TIMEOUT) - break; - - current_time = _pthread_get_tick_count (&frequency); - if (current_time >= end_time) - break; - - wait_time = (DWORD) (end_time - current_time); - } while (TRUE); - - return result; -} |