moved files

src/libs/tools.h

@@ -0,0 +1,104 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#                                                                            #
+#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#pragma once
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <unistd.h>
+#include <errno.h>
+#include <math.h>
+#include <time.h>
+#include <assert.h>
+
+
+#define A_CALLOC(_dest, _nmemb)		assert((_dest = calloc(_nmemb, sizeof(*(_dest)))))
+#define A_REALLOC(_dest, _nmemb)	assert((_dest = realloc(_dest, _nmemb * sizeof(*(_dest)))))
+#define MEMSET_ZERO(_obj)			memset(&(_obj), 0, sizeof(_obj))
+
+#define ARRAY_LEN(_array) (sizeof(_array) / sizeof(_array[0]))
+
+#define INLINE inline __attribute__((always_inline))
+#define UNUSED __attribute__((unused))
+
+
+INLINE char *bool_to_string(bool flag) {
+	return (flag ? "true" : "false");
+}
+
+INLINE size_t align_size(size_t size, size_t to) {
+	return ((size + (to - 1)) & ~(to - 1));
+}
+
+INLINE unsigned min_u(unsigned a, unsigned b) {
+	return (a < b ? a : b);
+}
+
+INLINE unsigned max_u(unsigned a, unsigned b) {
+	return (a > b ? a : b);
+}
+
+INLINE long long floor_ms(long double now) {
+	return (long long)now - (now < (long long)now); // floor()
+}
+
+INLINE void get_now(clockid_t clk_id, time_t *sec, long *msec) {
+	struct timespec spec;
+
+	assert(!clock_gettime(clk_id, &spec));
+	*sec = spec.tv_sec;
+	*msec = round(spec.tv_nsec / 1.0e6);
+
+	if (*msec > 999) {
+		*sec += 1;
+		*msec = 0;
+	}
+}
+
+INLINE long double get_now_monotonic(void) {
+	time_t sec;
+	long msec;
+
+#	if defined(CLOCK_MONOTONIC_RAW)
+	get_now(CLOCK_MONOTONIC_RAW, &sec, &msec);
+#	elif defined(CLOCK_MONOTONIC_FAST)
+	get_now(CLOCK_MONOTONIC_FAST, &sec, &msec);
+#	else
+	get_now(CLOCK_MONOTONIC, &sec, &msec);
+#	endif
+	return (long double)sec + ((long double)msec) / 1000;
+}
+
+INLINE long double get_now_real(void) {
+	time_t sec;
+	long msec;
+
+	get_now(CLOCK_REALTIME, &sec, &msec);
+	return (long double)sec + ((long double)msec) / 1000;
+}
+
+INLINE unsigned get_cores_available(void) {
+	long cores_sysconf = sysconf(_SC_NPROCESSORS_ONLN);
+	cores_sysconf = (cores_sysconf < 0 ? 0 : cores_sysconf);
+	return max_u(min_u(cores_sysconf, 4), 1);
+}