Added a way to add timestamps to the log file name


git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@504 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
parent f1f09624
......@@ -31,6 +31,7 @@
#include "log.h"
#include "platform.h"
#include "string-stream.h"
namespace v8 { namespace internal {
......@@ -686,6 +687,37 @@ bool Logger::Setup() {
if (open_log_file) {
if (strcmp(FLAG_logfile, "-") == 0) {
logfile_ = stdout;
} else if (strchr(FLAG_logfile, '%') != NULL) {
// If there's a '%' in the log file name we have to expand
// placeholders.
HeapStringAllocator allocator;
StringStream stream(&allocator);
for (const char* p = FLAG_logfile; *p; p++) {
if (*p == '%') {
p++;
switch (*p) {
case '\0':
// If there's a % at the end of the string we back up
// one character so we can escape the loop properly.
p--;
break;
case 't': {
// %t expands to the current time in milliseconds.
uint32_t time = static_cast<uint32_t>(OS::TimeCurrentMillis());
stream.Add("%u", time);
break;
}
default:
// All other %'s expand to themselves.
stream.Put(*p);
break;
}
} else {
stream.Put(*p);
}
}
SmartPointer<char> expanded = stream.ToCString();
logfile_ = OS::FOpen(*expanded, "w");
} else {
logfile_ = OS::FOpen(FLAG_logfile, "w");
}
......
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