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/*
* (C) Gražvydas "notaz" Ignotas, 2008-2010
*
* This work is licensed under the terms of any of these licenses
* (at your option):
* - GNU GPL, version 2 or later.
* - GNU LGPL, version 2.1 or later.
* See the COPYING file in the top-level directory.
*/
#define _GNU_SOURCE 1
#include <stdio.h>
#include <string.h>
#include <stdarg.h>
#include <dirent.h>
#include <sys/time.h>
#include <time.h>
#include <unistd.h>
#include <sys/mman.h>
#include <errno.h>
#include "../common/plat.h"
/* XXX: maybe unhardcode pagesize? */
#define HUGETLB_PAGESIZE (2 * 1024 * 1024)
#define HUGETLB_THRESHOLD (HUGETLB_PAGESIZE / 2)
#ifndef MAP_HUGETLB
#define MAP_HUGETLB 0x40000 /* arch specific */
#endif
int plat_is_dir(const char *path)
{
DIR *dir;
if ((dir = opendir(path))) {
closedir(dir);
return 1;
}
return 0;
}
int plat_get_root_dir(char *dst, int len)
{
int j, ret;
ret = readlink("/proc/self/exe", dst, len - 1);
if (ret < 0) {
perror("readlink");
ret = 0;
}
dst[ret] = 0;
for (j = strlen(dst); j > 0; j--)
if (dst[j] == '/') {
dst[++j] = 0;
break;
}
return j;
}
#ifdef __GP2X__
/* Wiz has a borked gettimeofday().. */
#define plat_get_ticks_ms plat_get_ticks_ms_good
#define plat_get_ticks_us plat_get_ticks_us_good
#endif
unsigned int plat_get_ticks_ms(void)
{
struct timeval tv;
unsigned int ret;
gettimeofday(&tv, NULL);
ret = (unsigned)tv.tv_sec * 1000;
/* approximate /= 1000 */
ret += ((unsigned)tv.tv_usec * 4195) >> 22;
return ret;
}
unsigned int plat_get_ticks_us(void)
{
struct timeval tv;
unsigned int ret;
gettimeofday(&tv, NULL);
ret = (unsigned)tv.tv_sec * 1000000;
ret += (unsigned)tv.tv_usec;
return ret;
}
void plat_sleep_ms(int ms)
{
usleep(ms * 1000);
}
int plat_wait_event(int *fds_hnds, int count, int timeout_ms)
{
struct timeval tv, *timeout = NULL;
int i, ret, fdmax = -1;
fd_set fdset;
if (timeout_ms >= 0) {
tv.tv_sec = timeout_ms / 1000;
tv.tv_usec = (timeout_ms % 1000) * 1000;
timeout = &tv;
}
FD_ZERO(&fdset);
for (i = 0; i < count; i++) {
if (fds_hnds[i] > fdmax) fdmax = fds_hnds[i];
FD_SET(fds_hnds[i], &fdset);
}
ret = select(fdmax + 1, &fdset, NULL, NULL, timeout);
if (ret == -1)
{
perror("plat_wait_event: select failed");
sleep(1);
return -1;
}
if (ret == 0)
return -1; /* timeout */
ret = -1;
for (i = 0; i < count; i++)
if (FD_ISSET(fds_hnds[i], &fdset))
ret = fds_hnds[i];
return ret;
}
void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed)
{
static int hugetlb_disabled;
int prot = PROT_READ | PROT_WRITE;
int flags = MAP_PRIVATE | MAP_ANONYMOUS;
void *req, *ret;
req = (void *)addr;
if (need_exec)
prot |= PROT_EXEC;
if (is_fixed)
flags |= MAP_FIXED;
if (size >= HUGETLB_THRESHOLD && !hugetlb_disabled)
flags |= MAP_HUGETLB;
ret = mmap(req, size, prot, flags, -1, 0);
if (ret == MAP_FAILED && (flags & MAP_HUGETLB)) {
fprintf(stderr,
"warning: failed to do hugetlb mmap (%p, %zu): %d\n",
req, size, errno);
hugetlb_disabled = 1;
flags &= ~MAP_HUGETLB;
ret = mmap(req, size, prot, flags, -1, 0);
}
if (ret == MAP_FAILED)
return NULL;
if (req != NULL && ret != req)
fprintf(stderr,
"warning: mmaped to %p, requested %p\n", ret, req);
return ret;
}
void *plat_mremap(void *ptr, size_t oldsize, size_t newsize)
{
void *ret;
ret = mremap(ptr, oldsize, newsize, MREMAP_MAYMOVE);
if (ret == MAP_FAILED)
return NULL;
if (ret != ptr)
printf("warning: mremap moved: %p -> %p\n", ptr, ret);
return ret;
}
void plat_munmap(void *ptr, size_t size)
{
int ret;
ret = munmap(ptr, size);
if (ret != 0 && (size & (HUGETLB_PAGESIZE - 1))) {
// prehaps an autorounded hugetlb mapping?
size = (size + HUGETLB_PAGESIZE - 1) & ~(HUGETLB_PAGESIZE - 1);
ret = munmap(ptr, size);
}
if (ret != 0) {
fprintf(stderr,
"munmap(%p, %zu) failed: %d\n", ptr, size, errno);
}
}
/* lprintf */
void lprintf(const char *fmt, ...)
{
va_list vl;
va_start(vl, fmt);
vprintf(fmt, vl);
va_end(vl);
}
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