240 static sigset_t SR_sigset;
241 static pthread_mutex_t dl_mutex; // Used to protect dlsym() calls.
242
243 julong os::available_memory() {
244 return Aix::available_memory();
245 }
246
247 julong os::Aix::available_memory() {
248 os::Aix::meminfo_t mi;
249 if (os::Aix::get_meminfo(&mi)) {
250 return mi.real_free;
251 } else {
252 return 0xFFFFFFFFFFFFFFFFLL;
253 }
254 }
255
256 julong os::physical_memory() {
257 return Aix::physical_memory();
258 }
259
260 ////////////////////////////////////////////////////////////////////////////////
261 // environment support
262
263 bool os::getenv(const char* name, char* buf, int len) {
264 const char* val = ::getenv(name);
265 if (val != NULL && strlen(val) < (size_t)len) {
266 strcpy(buf, val);
267 return true;
268 }
269 if (len > 0) buf[0] = 0; // return a null string
270 return false;
271 }
272
273 // Return true if user is running as root.
274
275 bool os::have_special_privileges() {
276 static bool init = false;
277 static bool privileges = false;
278 if (!init) {
279 privileges = (getuid() != geteuid()) || (getgid() != getegid());
280 init = true;
281 }
282 return privileges;
283 }
284
285 // Helper function, emulates disclaim64 using multiple 32bit disclaims
286 // because we cannot use disclaim64() on AS/400 and old AIX releases.
287 static bool my_disclaim64(char* addr, size_t size) {
288
289 if (size == 0) {
290 return true;
291 }
292
|
240 static sigset_t SR_sigset;
241 static pthread_mutex_t dl_mutex; // Used to protect dlsym() calls.
242
243 julong os::available_memory() {
244 return Aix::available_memory();
245 }
246
247 julong os::Aix::available_memory() {
248 os::Aix::meminfo_t mi;
249 if (os::Aix::get_meminfo(&mi)) {
250 return mi.real_free;
251 } else {
252 return 0xFFFFFFFFFFFFFFFFLL;
253 }
254 }
255
256 julong os::physical_memory() {
257 return Aix::physical_memory();
258 }
259
260 // Return true if user is running as root.
261
262 bool os::have_special_privileges() {
263 static bool init = false;
264 static bool privileges = false;
265 if (!init) {
266 privileges = (getuid() != geteuid()) || (getgid() != getegid());
267 init = true;
268 }
269 return privileges;
270 }
271
272 // Helper function, emulates disclaim64 using multiple 32bit disclaims
273 // because we cannot use disclaim64() on AS/400 and old AIX releases.
274 static bool my_disclaim64(char* addr, size_t size) {
275
276 if (size == 0) {
277 return true;
278 }
279
|