tomato/toxcore/util.c

170 lines
3.1 KiB
C
Raw Normal View History

/* SPDX-License-Identifier: GPL-3.0-or-later
* Copyright © 2016-2018 The TokTok team.
* Copyright © 2013 Tox project.
* Copyright © 2013 plutooo
*/
/**
* Utilities.
*/
#ifndef _XOPEN_SOURCE
#define _XOPEN_SOURCE 600
#endif
#include "util.h"
#include <stdlib.h>
#include <string.h>
#include "ccompat.h"
Squashed 'external/toxcore/c-toxcore/' changes from f1df709b87..8f0d505f9a 8f0d505f9a feat: add ngc events 9b8216e70c refactor: Make event dispatch ordered by receive time. 814c12a6f4 cleanup: Add dynamically derived array sizes to the API. 226b23be12 cleanup: Add explicit array sizes to toxencryptsave. ef33cb4de0 cleanup: Add Toxav alias for ToxAV. 1da723b34d cleanup: Make Tox_Options a typedef. b148a2afff chore: Simplify msvc build using vcpkg. 5cac6d7eb1 cleanup: Move `tox_get_system` out of the public API. c9ca4007e3 refactor: Align group message sending with other send functions. 6c6c0b1b1b cleanup: Make setters take non-const `Tox *`. a76f758d70 cleanup: Mark arrays in the tox API as `[]` instead of `*`. baf6d1f6cf cleanup: Make array params in toxav `[]` instead of `*`. 79f55bd06a cleanup: Put the size of fixed arrays into the API types. 1e73698db2 cleanup: Add typedefs for public API int identifiers. cac074c57f chore: Add fetch-sha256 script to update bootstrap node hash. 32576656bb Make the comment capitalization uniform aff4dda17c Spellcheck tox-bootstrapd 40b5fbbe9d chore: Remove settings.yml in favour of hs-github-tools. ebafd51be7 chore: Use GPL license with https. 0e42752f0f cleanup: Move all vptr-to-ptr casts to the beginning of a function. 5407384211 cleanup: Use github actions matrix to simplify CI. 82d8265688 fix: Use QueryPerformanceCounter on windows for monotonic time. 1224e656e3 chore: Add `net_(new|kill)_strerror` to cppcheck's allocators. 6a90ddfe4e cleanup: Run clang-tidy on headers, as well. bd930cc80a cleanup: Make TCP connection failures a warning instead of error. fad6e4e173 cleanup: Make all .c files include the headers they need. ef4897a898 cleanup: Upgrade to clang-tidy-17 and fix some warnings. REVERT: f1df709b87 feat: add ngc events REVERT: 1b6c907235 refactor: Make event dispatch ordered by receive time. git-subtree-dir: external/toxcore/c-toxcore git-subtree-split: 8f0d505f9a598cc41c682178e1589bcc01efe9cb
2024-01-09 16:39:05 +01:00
#include "mem.h"
bool is_power_of_2(uint64_t x)
{
return x != 0 && (x & (~x + 1)) == x;
}
void free_uint8_t_pointer_array(const Memory *mem, uint8_t **ary, size_t n_items)
{
if (ary == nullptr) {
return;
}
for (size_t i = 0; i < n_items; ++i) {
if (ary[i] != nullptr) {
mem_delete(mem, ary[i]);
}
}
mem_delete(mem, ary);
}
uint16_t data_checksum(const uint8_t *data, uint32_t length)
{
uint8_t checksum[2] = {0};
uint16_t check;
for (uint32_t i = 0; i < length; ++i) {
checksum[i % 2] ^= data[i];
}
memcpy(&check, checksum, sizeof(check));
return check;
}
int create_recursive_mutex(pthread_mutex_t *mutex)
{
pthread_mutexattr_t attr;
if (pthread_mutexattr_init(&attr) != 0) {
return -1;
}
if (pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE) != 0) {
pthread_mutexattr_destroy(&attr);
return -1;
}
/* Create queue mutex */
if (pthread_mutex_init(mutex, &attr) != 0) {
pthread_mutexattr_destroy(&attr);
return -1;
}
pthread_mutexattr_destroy(&attr);
return 0;
}
bool memeq(const uint8_t *a, size_t a_size, const uint8_t *b, size_t b_size)
{
return a_size == b_size && memcmp(a, b, a_size) == 0;
}
uint8_t *memdup(const uint8_t *data, size_t data_size)
{
if (data == nullptr || data_size == 0) {
return nullptr;
}
uint8_t *copy = (uint8_t *)malloc(data_size);
if (copy != nullptr) {
memcpy(copy, data, data_size);
}
return copy;
}
int16_t max_s16(int16_t a, int16_t b)
{
return a > b ? a : b;
}
int32_t max_s32(int32_t a, int32_t b)
{
return a > b ? a : b;
}
int64_t max_s64(int64_t a, int64_t b)
{
return a > b ? a : b;
}
int16_t min_s16(int16_t a, int16_t b)
{
return a < b ? a : b;
}
int32_t min_s32(int32_t a, int32_t b)
{
return a < b ? a : b;
}
int64_t min_s64(int64_t a, int64_t b)
{
return a < b ? a : b;
}
uint8_t max_u08(uint8_t a, uint8_t b)
{
return a > b ? a : b;
}
uint16_t max_u16(uint16_t a, uint16_t b)
{
return a > b ? a : b;
}
uint32_t max_u32(uint32_t a, uint32_t b)
{
return a > b ? a : b;
}
uint64_t max_u64(uint64_t a, uint64_t b)
{
return a > b ? a : b;
}
uint16_t min_u16(uint16_t a, uint16_t b)
{
return a < b ? a : b;
}
uint32_t min_u32(uint32_t a, uint32_t b)
{
return a < b ? a : b;
}
uint64_t min_u64(uint64_t a, uint64_t b)
{
return a < b ? a : b;
}
uint32_t jenkins_one_at_a_time_hash(const uint8_t *key, size_t len)
{
uint32_t hash = 0;
for (uint32_t i = 0; i < len; ++i) {
hash += key[i];
hash += (uint32_t)((uint64_t)hash << 10);
hash ^= hash >> 6;
}
hash += (uint32_t)((uint64_t)hash << 3);
hash ^= hash >> 11;
hash += (uint32_t)((uint64_t)hash << 15);
return hash;
}