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src/os/aix/vm/misc_aix.hpp

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rev 9449 : 8143125-Further Developments for AIX


  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 
  26 #ifndef OS_AIX_VM_MISC_AIX_HPP
  27 #define OS_AIX_VM_MISC_AIX_HPP
  28 
  29 // misc_aix.hpp, misc_aix.cpp: convenience functions needed for the OpenJDK AIX
  30 // port.
  31 #include "utilities/globalDefinitions.hpp"


  32 
  33 #include <pthread.h>
  34 
  35 // Trace if verbose to tty.
  36 #define trcVerbose(fmt, ...) { \
  37   if (Verbose) { \
  38     fprintf(stderr, fmt, ##__VA_ARGS__); \
  39     fputc('\n', stderr); fflush(stderr); \
  40   } \
  41 }
  42 #define ERRBYE(s) { trcVerbose(s); return -1; }
  43 #define trc(fmt, ...)
  44 
  45 #define assert0(b) assert((b), "")
  46 #define guarantee0(b) guarantee((b), "")
  47 template <class T1, class T2> bool is_aligned_to(T1 what, T2 alignment) {
  48   return (((uintx)(what)) & (((uintx)(alignment)) - 1)) == 0 ? true : false;
  49 }
  50 
  51 // CritSect: simple critical section implementation using pthread mutexes.


  77   };
  78 
  79   class AutoCritSect {
  80     CritSect* const _pcsobj;
  81    public:
  82     AutoCritSect(CritSect* pcsobj)
  83       : _pcsobj(pcsobj)
  84     {
  85       _pcsobj->enter();
  86     }
  87     ~AutoCritSect() {
  88       _pcsobj->leave();
  89     }
  90   };
  91 
  92   // Returns true if pointer can be dereferenced without triggering a segment
  93   // violation. Returns false if pointer is invalid.
  94   // Note: Depends on stub routines; prior to stub routine generation, will
  95   // always return true. Use CanUseSafeFetch32 to handle this case.
  96   bool is_readable_pointer(const void* p);




  97 
  98 }
  99 
 100 #endif // OS_AIX_VM_MISC_AIX_HPP
 101 


  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 
  26 #ifndef OS_AIX_VM_MISC_AIX_HPP
  27 #define OS_AIX_VM_MISC_AIX_HPP
  28 
  29 // misc_aix.hpp, misc_aix.cpp: convenience functions needed for the OpenJDK AIX
  30 // port.
  31 #include "utilities/globalDefinitions.hpp"
  32 #include "runtime/globals.hpp"
  33 #include "utilities/debug.hpp"
  34 
  35 #include <pthread.h>
  36 
  37 // Trace if verbose to tty.
  38 #define trcVerbose(fmt, ...) { \
  39   if (Verbose) { \
  40     fprintf(stderr, fmt, ##__VA_ARGS__); \
  41     fputc('\n', stderr); fflush(stderr); \
  42   } \
  43 }
  44 #define ERRBYE(s) { trcVerbose(s); return -1; }
  45 #define trc(fmt, ...)
  46 
  47 #define assert0(b) assert((b), "")
  48 #define guarantee0(b) guarantee((b), "")
  49 template <class T1, class T2> bool is_aligned_to(T1 what, T2 alignment) {
  50   return (((uintx)(what)) & (((uintx)(alignment)) - 1)) == 0 ? true : false;
  51 }
  52 
  53 // CritSect: simple critical section implementation using pthread mutexes.


  79   };
  80 
  81   class AutoCritSect {
  82     CritSect* const _pcsobj;
  83    public:
  84     AutoCritSect(CritSect* pcsobj)
  85       : _pcsobj(pcsobj)
  86     {
  87       _pcsobj->enter();
  88     }
  89     ~AutoCritSect() {
  90       _pcsobj->leave();
  91     }
  92   };
  93 
  94   // Returns true if pointer can be dereferenced without triggering a segment
  95   // violation. Returns false if pointer is invalid.
  96   // Note: Depends on stub routines; prior to stub routine generation, will
  97   // always return true. Use CanUseSafeFetch32 to handle this case.
  98   bool is_readable_pointer(const void* p);
  99 
 100   const char* describe_errno(int err_no);
 101 
 102   void sleep_ms(int milliseconds);
 103 
 104 }
 105 
 106 #endif // OS_AIX_VM_MISC_AIX_HPP
 107 
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