mirror of
https://github.com/Silicondust/libhdhomerun.git
synced 2024-09-07 15:30:46 -07:00
189 lines
3.9 KiB
C
189 lines
3.9 KiB
C
/*
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* hdhomerun_os_windows.c
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*
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* Copyright © 2006-2017 Silicondust USA Inc. <www.silicondust.com>.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "hdhomerun.h"
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void random_getbytes(uint8_t *out, size_t length)
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{
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BCryptGenRandom(NULL, out, (ULONG)length, BCRYPT_USE_SYSTEM_PREFERRED_RNG);
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}
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uint32_t random_get32(void)
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{
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uint32_t Result;
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random_getbytes((uint8_t *)&Result, 4);
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return Result;
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}
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uint64_t getcurrenttime(void)
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{
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return GetTickCount64();
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}
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uint64_t timer_get_hires_ticks(void)
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{
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LARGE_INTEGER count;
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if (!QueryPerformanceCounter(&count)) {
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return 0;
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}
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return count.QuadPart;
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}
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uint64_t timer_get_hires_frequency(void)
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{
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LARGE_INTEGER count;
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if (!QueryPerformanceFrequency(&count)) {
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return 0;
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}
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return count.QuadPart;
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}
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void msleep_approx(uint64_t ms)
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{
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Sleep((DWORD)ms);
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}
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void msleep_minimum(uint64_t ms)
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{
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uint64_t stop_time = getcurrenttime() + ms;
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while (1) {
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uint64_t current_time = getcurrenttime();
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if (current_time >= stop_time) {
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return;
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}
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msleep_approx(stop_time - current_time);
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}
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}
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struct thread_task_execute_args_t {
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thread_task_func_t func;
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void *arg;
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};
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static DWORD WINAPI thread_task_execute(void *arg)
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{
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struct thread_task_execute_args_t *execute_args = (struct thread_task_execute_args_t *)arg;
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execute_args->func(execute_args->arg);
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free(execute_args);
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return 0;
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}
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bool thread_task_create(thread_task_t *tid, thread_task_func_t func, void *arg)
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{
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struct thread_task_execute_args_t *execute_args = (struct thread_task_execute_args_t *)malloc(sizeof(struct thread_task_execute_args_t));
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if (!execute_args) {
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return false;
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}
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execute_args->func = func;
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execute_args->arg = arg;
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*tid = CreateThread(NULL, 0, thread_task_execute, execute_args, 0, NULL);
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if (!*tid) {
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free(execute_args);
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return false;
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}
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return true;
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}
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void thread_task_join(thread_task_t tid)
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{
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WaitForSingleObject(tid, INFINITE);
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CloseHandle(tid);
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}
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void thread_mutex_init(thread_mutex_t *mutex)
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{
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*mutex = CreateMutex(NULL, false, NULL);
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}
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void thread_mutex_dispose(thread_mutex_t *mutex)
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{
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CloseHandle(*mutex);
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}
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void thread_mutex_lock(thread_mutex_t *mutex)
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{
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WaitForSingleObject(*mutex, INFINITE);
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}
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void thread_mutex_unlock(thread_mutex_t *mutex)
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{
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ReleaseMutex(*mutex);
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}
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void thread_cond_init(thread_cond_t *cond)
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{
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*cond = CreateEvent(NULL, false, false, NULL);
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}
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void thread_cond_dispose(thread_cond_t *cond)
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{
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CloseHandle(*cond);
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}
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void thread_cond_signal(thread_cond_t *cond)
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{
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SetEvent(*cond);
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}
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void thread_cond_wait(thread_cond_t *cond)
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{
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WaitForSingleObject(*cond, INFINITE);
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}
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bool thread_cond_wait_with_timeout(thread_cond_t *cond, uint64_t max_wait_time)
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{
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return (WaitForSingleObject(*cond, (DWORD)max_wait_time) == WAIT_OBJECT_0);
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}
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bool hdhomerun_vsprintf(char *buffer, char *end, const char *fmt, va_list ap)
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{
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if (buffer >= end) {
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return false;
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}
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int length = _vsnprintf(buffer, end - buffer - 1, fmt, ap);
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if (length < 0) {
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*buffer = 0;
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return false;
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}
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if (buffer + length + 1 > end) {
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*(end - 1) = 0;
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return false;
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}
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return true;
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}
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bool hdhomerun_sprintf(char *buffer, char *end, const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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bool result = hdhomerun_vsprintf(buffer, end, fmt, ap);
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va_end(ap);
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return result;
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}
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