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8050807: Better performing performance data handling

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Reviewed-by: dcubed, pnauman, ctornqvi, dholmes, mschoene
This commit is contained in:
Gerald Thornbrugh 2014-11-17 15:51:46 -05:00 • committed by Gerald Thornbrugh
parent 616b927160
commit 3f915eeafd
4 changed files with 841 additions and 194 deletions
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4
hotspot/src/share/vm/utilities/vmError.cpp
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@ -22,6 +22,7 @@
*
*/
#include <fcntl.h>
#include "precompiled.hpp"
#include "code/codeCache.hpp"
#include "compiler/compileBroker.hpp"
@ -807,7 +808,8 @@ fdStream VMError::log; // error log used by VMError::report_and_die()
static int expand_and_open(const char* pattern, char* buf, size_t buflen, size_t pos) {
int fd = -1;
if (Arguments::copy_expand_pid(pattern, strlen(pattern), &buf[pos], buflen - pos)) {
fd = open(buf, O_RDWR | O_CREAT | O_TRUNC, 0666);
// the O_EXCL flag will cause the open to fail if the file exists
fd = open(buf, O_RDWR | O_CREAT | O_EXCL, 0666);
}
return fd;
}