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Minor cpu_stat improvements.

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GitOrigin-RevId: ef6f8b0ed04ae88c9784260435e06a647babf0a1
This commit is contained in:
levlam 2020-06-14 02:49:10 +03:00
parent 6b1c2f797d
commit 50a6b5da92
2 changed files with 11 additions and 5 deletions
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15
tdutils/td/utils/port/Stat.cpp
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@ -302,7 +302,9 @@ Status cpu_stat_self(CpuStat &stat) {
constexpr int TMEM_SIZE = 10000;
char mem[TMEM_SIZE];
TRY_RESULT(size, fd.read(MutableSlice(mem, TMEM_SIZE - 1)));
CHECK(size < TMEM_SIZE - 1);
if (size >= TMEM_SIZE - 1) {
return Status::Error("Failed for read /proc/self/stat");
}
mem[size] = 0;
char *s = mem;
@ -338,14 +340,17 @@ Status cpu_stat_total(CpuStat &stat) {
constexpr int TMEM_SIZE = 10000;
char mem[TMEM_SIZE];
TRY_RESULT(size, fd.read(MutableSlice(mem, TMEM_SIZE - 1)));
CHECK(size < TMEM_SIZE - 1);
if (size >= TMEM_SIZE - 1) {
return Status::Error("Failed for read /proc/stat");
}
mem[size] = 0;
uint64 sum = 0, cur = 0;
uint64 sum = 0;
uint64 cur = 0;
for (size_t i = 0; i < size; i++) {
int c = mem[i];
char c = mem[i];
if (c >= '0' && c <= '9') {
cur = cur * 10 + (uint64)c - '0';
cur = cur * 10 + static_cast<uint64>(c) - '0';
} else {
sum += cur;
cur = 0;

1
tdutils/td/utils/port/Stat.h
View File

@ -30,6 +30,7 @@ struct CpuStat {
uint64 process_user_ticks{0};
uint64 process_system_ticks{0};
};
Result<CpuStat> cpu_stat() TD_WARN_UNUSED_RESULT;
struct MemStat {