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get_mem_used should now report more accurate values

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This commit is contained in:
twinaphex 2016-06-22 23:32:11 +02:00
parent 1e91689919
commit 549bc8dc5e
1 changed files with 38 additions and 12 deletions
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50
frontend/drivers/platform_linux.c
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@ -1912,23 +1912,49 @@ static void frontend_linux_exitspawn(char *core_path, size_t core_path_size)
static uint64_t frontend_linux_get_mem_total(void)
{
uint64_t pageSize = sysconf(_SC_PAGESIZE);
uint64_t totalNumPages = sysconf(_SC_PHYS_PAGES);
return pageSize * totalNumPages;
}
FILE* data = fopen("/proc/meminfo", "r");
if (!data)
return 0;
static uint64_t frontend_linux_get_mem_free(void)
{
uint64_t pageSize = sysconf(_SC_PAGESIZE);
uint64_t availNumPages = sysconf(_SC_AVPHYS_PAGES);
return availNumPages * pageSize;
char line[256];
uint64_t total = 0;
while (fgets(line, sizeof(line), data)) {
if (sscanf(line, "MemTotal: %lu kB", &total) == 1) {
fclose(data);
total *= 1024;
return total;
}
}
fclose(data);
return 0;
}
static uint64_t frontend_linux_get_mem_used(void)
{
uint64_t free_mem = frontend_linux_get_mem_free();
uint64_t total_mem = frontend_linux_get_mem_total();
return total_mem - free_mem;
FILE* data = fopen("/proc/meminfo", "r");
if (!data)
return 0;
uint64_t total = 0;
uint64_t freemem = 0;
uint64_t buffers = 0;
uint64_t cached = 0;
char line[256];
while (fgets(line, sizeof(line), data)) {
if (sscanf(line, "MemTotal: %lu kB", &total) == 1)
total *= 1024;
if (sscanf(line, "MemFree: %lu kB", &freemem) == 1)
freemem *= 1024;
if (sscanf(line, "Buffers: %lu kB", &buffers) == 1)
buffers *= 1024;
if (sscanf(line, "Cached: %lu kB", &cached) == 1)
cached *= 1024;
}
fclose(data);
return total - freemem - buffers - cached;
}
frontend_ctx_driver_t frontend_ctx_linux = {