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8234741: enhance os::get_core_path on macOS

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Reviewed-by: clanger, gziemski
This commit is contained in:
Matthias Baesken 2019-11-29 09:52:50 +01:00
parent 6ba58f7633
commit fec6f8a1e4
1 changed files with 21 additions and 2 deletions
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23
src/hotspot/os/bsd/os_bsd.cpp
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@ -3763,11 +3763,30 @@ int os::fork_and_exec(char* cmd, bool use_vfork_if_available) {
} }
} }
// Get the default path to the core file // Get the kern.corefile setting, or otherwise the default path to the core file
// Returns the length of the string // Returns the length of the string
int os::get_core_path(char* buffer, size_t bufferSize) { int os::get_core_path(char* buffer, size_t bufferSize) {
int n = jio_snprintf(buffer, bufferSize, "/cores/core.%d", current_process_id()); int n = 0;
#ifdef __APPLE__
char coreinfo[MAX_PATH];
size_t sz = sizeof(coreinfo);
int ret = sysctlbyname("kern.corefile", coreinfo, &sz, NULL, 0);
if (ret == 0) {
char *pid_pos = strstr(coreinfo, "%P");
// skip over the "%P" to preserve any optional custom user pattern
const char* tail = (pid_pos != NULL) ? (pid_pos + 2) : "";
if (pid_pos != NULL) {
*pid_pos = '\0';
n = jio_snprintf(buffer, bufferSize, "%s%d%s", coreinfo, os::current_process_id(), tail);
} else {
n = jio_snprintf(buffer, bufferSize, "%s", coreinfo);
}
} else
#endif
{
n = jio_snprintf(buffer, bufferSize, "/cores/core.%d", os::current_process_id());
}
// Truncate if theoretical string was longer than bufferSize // Truncate if theoretical string was longer than bufferSize
n = MIN2(n, (int)bufferSize); n = MIN2(n, (int)bufferSize);