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uclibc doesn't return valid values via sysconf for ram, so work around it by reading /proc if possible.

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Con Kolivas 2010-11-30 11:24:29 +11:00
parent f2b5852872
commit d39d3959e8
1 changed files with 22 additions and 2 deletions
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24
rzip.h
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@ -141,6 +141,8 @@ typedef uint32_t u32;
#define PAGE_SIZE (4096) #define PAGE_SIZE (4096)
#endif #endif
void fatal(const char *format, ...);
#ifdef __APPLE__ #ifdef __APPLE__
#include <sys/sysctl.h> #include <sys/sysctl.h>
#define fmemopen fake_fmemopen #define fmemopen fake_fmemopen
@ -166,7 +168,26 @@ static inline i64 get_ram(void)
#define memstream_update_buffer(A, B, C) (0) #define memstream_update_buffer(A, B, C) (0)
static inline i64 get_ram(void) static inline i64 get_ram(void)
{ {
return (i64)sysconf(_SC_PHYS_PAGES) * (i64)sysconf(_SC_PAGE_SIZE); i64 ramsize;
FILE *meminfo;
char aux[256];
char *ignore;
ramsize = (i64)sysconf(_SC_PHYS_PAGES) * PAGE_SIZE;
if (ramsize > 0)
return ramsize;
/* Workaround for uclibc which doesn't properly support sysconf */
if(!(meminfo = fopen("/proc/meminfo", "r")))
fatal("fopen\n");
while(!feof(meminfo) && !fscanf(meminfo, "MemTotal: %Lu kB", &ramsize))
ignore = fgets(aux, sizeof(aux), meminfo);
if (fclose(meminfo) == -1)
fatal("fclose");
ramsize *= 1000;
return ramsize;
} }
#endif #endif
@ -263,7 +284,6 @@ struct stream_info {
long next_thread; long next_thread;
}; };
void fatal(const char *format, ...);
void sighandler(); void sighandler();
i64 runzip_fd(int fd_in, int fd_out, int fd_hist, i64 expected_size); i64 runzip_fd(int fd_in, int fd_out, int fd_hist, i64 expected_size);
void rzip_fd(int fd_in, int fd_out); void rzip_fd(int fd_in, int fd_out);