15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 //Definitions of our util functions
  27 
  28 void* must_malloc(size_t size);
  29 #ifndef USE_MTRACE
  30 #define mtrace(c, ptr, size)
  31 #else
  32 void mtrace(char c, void* ptr, size_t size);
  33 #endif
  34 


  35 // overflow management
  36 #define OVERFLOW ((uint)-1)
  37 #define PSIZE_MAX (OVERFLOW/2)  /* normal size limit */
  38 
  39 inline size_t scale_size(size_t size, size_t scale) {
  40   return (size > PSIZE_MAX / scale) ? OVERFLOW : size * scale;
  41 }
  42 
  43 inline size_t add_size(size_t size1, size_t size2) {
  44   return ((size1 | size2 | (size1 + size2)) > PSIZE_MAX)
  45     ? OVERFLOW
  46     : size1 + size2;
  47 }
  48 
  49 inline size_t add_size(size_t size1, size_t size2, int size3) {
  50   return add_size(add_size(size1, size2), size3);
  51 }
  52 
  53 // These may be expensive, because they have to go via Java TSD,
  54 // if the optional u argument is missing.

  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 //Definitions of our util functions
  27 
  28 void* must_malloc(size_t size);
  29 #ifndef USE_MTRACE
  30 #define mtrace(c, ptr, size)
  31 #else
  32 void mtrace(char c, void* ptr, size_t size);
  33 #endif
  34 
  35 // <math.h> may have defined OVERFLOW as a non-standard extension
  36 #undef OVERFLOW
  37 // overflow management
  38 #define OVERFLOW ((uint)-1)
  39 #define PSIZE_MAX (OVERFLOW/2)  /* normal size limit */
  40 
  41 inline size_t scale_size(size_t size, size_t scale) {
  42   return (size > PSIZE_MAX / scale) ? OVERFLOW : size * scale;
  43 }
  44 
  45 inline size_t add_size(size_t size1, size_t size2) {
  46   return ((size1 | size2 | (size1 + size2)) > PSIZE_MAX)
  47     ? OVERFLOW
  48     : size1 + size2;
  49 }
  50 
  51 inline size_t add_size(size_t size1, size_t size2, int size3) {
  52   return add_size(add_size(size1, size2), size3);
  53 }
  54 
  55 // These may be expensive, because they have to go via Java TSD,
  56 // if the optional u argument is missing.