blob: 78df4a4a7008224dcaa910cbb951121c981d3a30 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
|
#ifndef TENSORFLOW_STREAM_EXECUTOR_LIB_HUMAN_READABLE_H_
#define TENSORFLOW_STREAM_EXECUTOR_LIB_HUMAN_READABLE_H_
#include <assert.h>
#include <limits>
#include "tensorflow/stream_executor/lib/stringprintf.h"
#include "tensorflow/stream_executor/platform/port.h"
namespace perftools {
namespace gputools {
namespace port {
class HumanReadableNumBytes {
public:
static string ToString(int64 num_bytes) {
if (num_bytes == std::numeric_limits<int64>::min()) {
// Special case for number with not representable nagation.
return "-8E";
}
const char* neg_str = GetNegStr(&num_bytes);
// Special case for bytes.
if (num_bytes < 1024LL) {
// No fractions for bytes.
return port::Printf("%s%lldB", neg_str, num_bytes);
}
static const char units[] = "KMGTPE"; // int64 only goes up to E.
const char* unit = units;
while (num_bytes >= (1024LL) * (1024LL)) {
num_bytes /= (1024LL);
++unit;
assert(unit < units + sizeof(units));
}
return port::Printf(((*unit == 'K') ? "%s%.1f%c" : "%s%.2f%c"), neg_str,
num_bytes / 1024.0, *unit);
}
private:
template <typename T>
static const char* GetNegStr(T* value) {
if (*value < 0) {
*value = -(*value);
return "-";
} else {
return "";
}
}
};
} // namespace port
} // namespace gputools
} // namespace perftools
#endif // TENSORFLOW_STREAM_EXECUTOR_LIB_HUMAN_READABLE_H_
|
