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6721093: -XX:AppendRatio=N not supported

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Add mechanism to ignore unsupported flags for a set period of time

Reviewed-by: acorn, never, coleenp
This commit is contained in:
Keith McGuigan 2008-07-28 14:07:44 -04:00
parent 20dba03e99
commit 74faacc945
18 changed files with 432 additions and 158 deletions
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34
hotspot/src/os/linux/vm/os_linux.cpp
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@ -94,6 +94,9 @@ static pid_t _initial_pid = 0;
static int SR_signum = SIGUSR2;
sigset_t SR_sigset;
/* Used to protect dlsym() calls */
static pthread_mutex_t dl_mutex;
////////////////////////////////////////////////////////////////////////////////
// utility functions
@ -1493,6 +1496,24 @@ const char* os::dll_file_extension() { return ".so"; }
const char* os::get_temp_directory() { return "/tmp/"; }
void os::dll_build_name(
char* buffer, size_t buflen, const char* pname, const char* fname) {
// copied from libhpi
const size_t pnamelen = pname ? strlen(pname) : 0;
/* Quietly truncate on buffer overflow. Should be an error. */
if (pnamelen + strlen(fname) + 10 > (size_t) buflen) {
*buffer = '\0';
return;
}
if (pnamelen == 0) {
sprintf(buffer, "lib%s.so", fname);
} else {
sprintf(buffer, "%s/lib%s.so", pname, fname);
}
}
const char* os::get_current_directory(char *buf, int buflen) {
return getcwd(buf, buflen);
}
@ -1742,7 +1763,17 @@ void * os::dll_load(const char *filename, char *ebuf, int ebuflen)
return NULL;
}
/*
* glibc-2.0 libdl is not MT safe. If you are building with any glibc,
* chances are you might want to run the generated bits against glibc-2.0
* libdl.so, so always use locking for any version of glibc.
*/
void* os::dll_lookup(void* handle, const char* name) {
pthread_mutex_lock(&dl_mutex);
void* res = dlsym(handle, name);
pthread_mutex_unlock(&dl_mutex);
return res;
}
bool _print_ascii_file(const char* filename, outputStream* st) {
@ -3581,6 +3612,7 @@ void os::init(void) {
Linux::clock_init();
initial_time_count = os::elapsed_counter();
pthread_mutex_init(&dl_mutex, NULL);
}
// To install functions for atexit system call