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8140482: Various minor code improvements (runtime)

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Reviewed-by: dholmes, coleenp, sspitsyn, dsamersoff
This commit is contained in:
Goetz Lindenmaier 2015-10-26 16:21:37 +01:00
parent 333927f512
commit 3b8c97faae
15 changed files with 142 additions and 115 deletions
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26
hotspot/src/os/linux/vm/os_linux.cpp
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@ -4252,7 +4252,9 @@ int os::Linux::get_our_sigflags(int sig) {
void os::Linux::set_our_sigflags(int sig, int flags) {
assert(sig > 0 && sig < MAXSIGNUM, "vm signal out of expected range");
sigflags[sig] = flags;
if (sig > 0 && sig < MAXSIGNUM) {
sigflags[sig] = flags;
}
}
void os::Linux::set_signal_handler(int sig, bool set_installed) {
@ -5927,22 +5929,20 @@ int os::get_core_path(char* buffer, size_t bufferSize) {
char core_pattern[core_pattern_len] = {0};
int core_pattern_file = ::open("/proc/sys/kernel/core_pattern", O_RDONLY);
if (core_pattern_file != -1) {
ssize_t ret = ::read(core_pattern_file, core_pattern, core_pattern_len);
::close(core_pattern_file);
if (ret > 0) {
char *last_char = core_pattern + strlen(core_pattern) - 1;
if (*last_char == '\n') {
*last_char = '\0';
}
}
if (core_pattern_file == -1) {
return -1;
}
if (strlen(core_pattern) == 0) {
ssize_t ret = ::read(core_pattern_file, core_pattern, core_pattern_len);
::close(core_pattern_file);
if (ret <= 0 || ret >= core_pattern_len || core_pattern[0] == '\n') {
return -1;
}
if (core_pattern[ret-1] == '\n') {
core_pattern[ret-1] = '\0';
} else {
core_pattern[ret] = '\0';
}
char *pid_pos = strstr(core_pattern, "%p");
int written;