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Code Issues Releases Wiki Activity

add meminfo

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This commit is contained in:
winlin 2014-04-20 00:15:26 +08:00
parent 15aea4d9b3
commit a5f4f6bd14
5 changed files with 208 additions and 12 deletions
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78
trunk/src/kernel/srs_kernel_utility.cpp
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@ -286,6 +286,84 @@ void srs_update_proc_stat()
}
}
SrsMemInfo::SrsMemInfo()
{
ok = false;
sample_time = 0;
percent_ram = 0;
percent_swap = 0;
MemActive = 0;
RealInUse = 0;
NotInUse = 0;
MemTotal = 0;
MemFree = 0;
Buffers = 0;
Cached = 0;
SwapTotal = 0;
SwapFree = 0;
}
static SrsMemInfo _srs_system_meminfo;
SrsMemInfo* srs_get_meminfo()
{
return &_srs_system_meminfo;
}
void srs_update_meminfo()
{
FILE* f = fopen("/proc/meminfo", "r");
if (f == NULL) {
srs_warn("open meminfo failed, ignore");
return;
}
SrsMemInfo& r = _srs_system_meminfo;
r.ok = false;
for (;;) {
static char label[64];
static unsigned long value;
static char postfix[64];
int ret = fscanf(f, "%64s %lu %64s\n", label, &value, postfix);
if (ret == EOF) {
break;
}
if (strcmp("MemTotal:", label) == 0) {
r.MemTotal = value;
} else if (strcmp("MemFree:", label) == 0) {
r.MemFree = value;
} else if (strcmp("Buffers:", label) == 0) {
r.Buffers = value;
} else if (strcmp("Cached:", label) == 0) {
r.Cached = value;
} else if (strcmp("SwapTotal:", label) == 0) {
r.SwapTotal = value;
} else if (strcmp("SwapFree:", label) == 0) {
r.SwapFree = value;
}
}
r.sample_time = srs_get_system_time_ms();
r.MemActive = r.MemTotal - r.MemFree;
r.RealInUse = r.MemActive - r.Buffers - r.Cached;
r.NotInUse = r.MemTotal - r.RealInUse;
r.ok = true;
if (r.MemTotal > 0) {
r.percent_ram = (float)(r.RealInUse / (double)r.MemTotal);
}
if (r.SwapTotal > 0) {
r.percent_swap = (float)((r.SwapTotal - r.SwapFree) / (double)r.SwapTotal);
}
fclose(f);
}
SrsCpuInfo::SrsCpuInfo()
{
ok = false;