119 lines
2.6 KiB
C
119 lines
2.6 KiB
C
/*
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* Copyright (c) 2013 Hugh Bailey <obs.jim@gmail.com>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <stdlib.h>
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#include <dlfcn.h>
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#include <unistd.h>
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#include <time.h>
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#include "dstr.h"
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#include "platform.h"
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void *os_dlopen(const char *path)
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{
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struct dstr dylib_name;
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if (!path)
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return NULL;
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dstr_init_copy(&dylib_name, path);
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if (!dstr_find(&dylib_name, ".so"))
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dstr_cat(&dylib_name, ".so");
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void *res = dlopen(dylib_name.array, RTLD_LAZY);
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if (!res)
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blog(LOG_ERROR, "os_dlopen(%s->%s): %s\n",
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path, dylib_name.array, dlerror());
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dstr_free(&dylib_name);
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return res;
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}
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void *os_dlsym(void *module, const char *func)
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{
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return dlsym(module, func);
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}
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void os_dlclose(void *module)
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{
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dlclose(module);
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}
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bool os_sleepto_ns(uint64_t time_target)
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{
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uint64_t current = os_gettime_ns();
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if (time_target < current)
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return false;
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time_target -= current;
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struct timespec req, remain;
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memset(&req, 0, sizeof(req));
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memset(&remain, 0, sizeof(remain));
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req.tv_sec = time_target/1000000000;
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req.tv_nsec = time_target%1000000000;
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while (nanosleep(&req, &remain)) {
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req = remain;
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memset(&remain, 0, sizeof(remain));
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}
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return true;
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}
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void os_sleep_ms(uint32_t duration)
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{
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usleep(duration*1000);
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}
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uint64_t os_gettime_ns(void)
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{
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struct timespec ts;
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clock_gettime(CLOCK_MONOTONIC, &ts);
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return ((uint64_t) ts.tv_sec * 1000000000ULL + (uint64_t) ts.tv_nsec);
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}
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/* should return $HOME/.[name] */
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char *os_get_config_path(const char *name)
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{
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char *path_ptr = getenv("HOME");
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if (path_ptr == NULL)
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bcrash("Could not get $HOME\n");
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struct dstr path;
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dstr_init_copy(&path, path_ptr);
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dstr_cat(&path, "/.");
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dstr_cat(&path, name);
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return path.array;
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}
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bool os_file_exists(const char *path)
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{
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return access(path, F_OK) == 0;
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}
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int os_mkdir(const char *path)
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{
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int errorcode = mkdir(path, S_IRWXU);
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if (errorcode == 0)
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return MKDIR_SUCCESS;
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return (errno == EEXIST) ? MKDIR_EXISTS : MKDIR_ERROR;
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}
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