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#include "memory.h"
#include "common/io.h"
#include "common/mallocHelper.h"
#include <inttypes.h>
const char* ffDetectMemory(FFMemoryResult* ram) {
char buf[PROC_FILE_BUFFSIZ];
ssize_t nRead = ffReadFileData("/proc/meminfo", ARRAY_SIZE(buf) - 1, buf);
if (nRead < 0) {
return "ffReadFileData(\"/proc/meminfo\", ARRAY_SIZE(buf)-1, buf)";
}
buf[nRead] = '\0';
uint64_t memTotal = 0,
memAvailable = 0,
shmem = 0,
memFree = 0,
buffers = 0,
cached = 0,
sReclaimable = 0;
char* token = NULL;
if ((token = strstr(buf, "MemTotal:")) != NULL) {
memTotal = strtoul(token + strlen("MemTotal:"), NULL, 10);
} else {
return "MemTotal not found in /proc/meminfo";
}
if ((token = strstr(buf, "MemAvailable:")) != NULL) {
memAvailable = strtoul(token + strlen("MemAvailable:"), NULL, 10);
}
if (memAvailable == 0 || memAvailable >= memTotal) // MemAvailable can be unreasonable. #1988
{
if ((token = strstr(buf, "MemFree:")) != NULL) {
memFree = strtoul(token + strlen("MemFree:"), NULL, 10);
}
if ((token = strstr(buf, "Buffers:")) != NULL) {
buffers = strtoul(token + strlen("Buffers:"), NULL, 10);
}
if ((token = strstr(buf, "Cached:")) != NULL) {
cached = strtoul(token + strlen("Cached:"), NULL, 10);
}
if ((token = strstr(buf, "Shmem:")) != NULL) {
shmem = strtoul(token + strlen("Shmem:"), NULL, 10);
}
if ((token = strstr(buf, "SReclaimable:")) != NULL) {
sReclaimable = strtoul(token + strlen("SReclaimable:"), NULL, 10);
}
memAvailable = memFree + buffers + cached + sReclaimable - shmem;
}
ram->bytesTotal = memTotal * 1024lu;
ram->bytesUsed = (memTotal - memAvailable) * 1024lu;
return NULL;
}
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