mirror of
https://github.com/Silicondust/libhdhomerun.git
synced 2024-10-17 17:10:22 -07:00
283 lines
5.9 KiB
C
283 lines
5.9 KiB
C
/*
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* hdhomerun_os_posix.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_os.h"
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#if defined(__APPLE__)
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#include <mach/clock.h>
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#include <mach/mach.h>
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static pthread_once_t clock_monotonic_once = PTHREAD_ONCE_INIT;
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static clock_serv_t clock_monotonic_clock_serv;
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static void clock_monotonic_init(void)
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{
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host_get_clock_service(mach_host_self(), SYSTEM_CLOCK, &clock_monotonic_clock_serv);
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}
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static inline void clock_monotonic_timespec(struct timespec *ts)
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{
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pthread_once(&clock_monotonic_once, clock_monotonic_init);
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struct mach_timespec mt;
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clock_get_time(clock_monotonic_clock_serv, &mt);
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ts->tv_nsec = mt.tv_nsec;
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ts->tv_sec = mt.tv_sec;
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}
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static inline void clock_realtime_timespec(struct timespec *ts)
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{
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struct timeval tv;
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gettimeofday(&tv, NULL);
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ts->tv_nsec = tv.tv_usec * 1000;
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ts->tv_sec = tv.tv_sec;
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}
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#else
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static inline void clock_monotonic_timespec(struct timespec *ts)
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{
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clock_gettime(CLOCK_MONOTONIC, ts);
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}
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static inline void clock_realtime_timespec(struct timespec *ts)
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{
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clock_gettime(CLOCK_REALTIME, ts);
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}
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#endif
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static pthread_once_t random_getbytes_once = PTHREAD_ONCE_INIT;
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static FILE *random_getbytes_fp = NULL;
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static void random_getbytes_init(void)
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{
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random_getbytes_fp = fopen("/dev/urandom", "rb");
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}
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void random_getbytes(uint8_t *out, size_t length)
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{
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pthread_once(&random_getbytes_once, random_getbytes_init);
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if (!random_getbytes_fp) {
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exit(1);
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}
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if (fread(out, 1, length, random_getbytes_fp) != length) {
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exit(1);
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}
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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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struct timespec ts;
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clock_monotonic_timespec(&ts);
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return ((uint64_t)ts.tv_sec * 1000) + (ts.tv_nsec / 1000000);
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}
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uint64_t timer_get_hires_ticks(void)
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{
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struct timespec ts;
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clock_monotonic_timespec(&ts);
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return ((uint64_t)ts.tv_sec * 1000000) + (ts.tv_nsec / 1000);
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}
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uint64_t timer_get_hires_frequency(void)
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{
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return 1000000;
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}
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void msleep_approx(uint64_t ms)
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{
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uint64_t delay_s = ms / 1000;
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if (delay_s > 0) {
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sleep((unsigned int)delay_s);
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ms -= delay_s * 1000;
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}
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uint64_t delay_us = ms * 1000;
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if (delay_us > 0) {
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usleep((useconds_t)delay_us);
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}
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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 void *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 NULL;
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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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if (pthread_create(tid, NULL, thread_task_execute, execute_args) != 0) {
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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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pthread_join(tid, NULL);
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}
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void thread_mutex_init(thread_mutex_t *mutex)
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{
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pthread_mutex_init(mutex, NULL);
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}
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void thread_mutex_dispose(pthread_mutex_t *mutex)
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{
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}
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void thread_mutex_lock(thread_mutex_t *mutex)
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{
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pthread_mutex_lock(mutex);
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}
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void thread_mutex_unlock(thread_mutex_t *mutex)
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{
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pthread_mutex_unlock(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->signaled = false;
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pthread_mutex_init(&cond->lock, NULL);
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pthread_cond_init(&cond->cond, 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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}
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void thread_cond_signal(thread_cond_t *cond)
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{
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pthread_mutex_lock(&cond->lock);
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cond->signaled = true;
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pthread_cond_signal(&cond->cond);
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pthread_mutex_unlock(&cond->lock);
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}
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void thread_cond_wait(thread_cond_t *cond)
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{
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pthread_mutex_lock(&cond->lock);
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if (!cond->signaled) {
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pthread_cond_wait(&cond->cond, &cond->lock);
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}
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cond->signaled = false;
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pthread_mutex_unlock(&cond->lock);
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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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pthread_mutex_lock(&cond->lock);
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if (!cond->signaled) {
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struct timespec ts;
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clock_realtime_timespec(&ts);
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uint64_t tv_nsec = (uint64_t)ts.tv_nsec + (max_wait_time * 1000000);
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ts.tv_nsec = (long)(tv_nsec % 1000000000);
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ts.tv_sec += (time_t)(tv_nsec / 1000000000);
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if (pthread_cond_timedwait(&cond->cond, &cond->lock, &ts) != 0) {
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pthread_mutex_unlock(&cond->lock);
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return false;
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}
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}
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cond->signaled = false;
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pthread_mutex_unlock(&cond->lock);
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return true;
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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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