# HG changeset patch
# User zgu
# Date 1303909797 14400
# Node ID 2a3da7eaf4a64d14cbaab4e1f7dbd6366b2e6a08
# Parent  3449f5e02cc446b879e6d98e98d5ea979ffcb66b
7036747: 7017009 reappeared, problem with ElfStringTable
Summary: Created new "new" operator for CHeapObj that allows malloc to fail without causing fatal error. Also replaced "HeapAllocate" with "os::malloc" in decoder code to allow decoder to handle low memory scenario.
Reviewed-by: coleenp, dholmes

diff -r 3449f5e02cc4 -r 2a3da7eaf4a6 src/share/vm/memory/allocation.cpp
--- a/src/share/vm/memory/allocation.cpp	Tue Apr 12 14:18:53 2011 -0700
+++ b/src/share/vm/memory/allocation.cpp	Wed Apr 27 09:09:57 2011 -0400
@@ -44,6 +44,14 @@
   return (void *) AllocateHeap(size, "CHeapObj-new");
 }
 
+void* CHeapObj::operator new (size_t size, const std::nothrow_t&  nothrow_constant) {
+  char* p = (char*) os::malloc(size);
+#ifdef ASSERT
+  if (PrintMallocFree) trace_heap_malloc(size, "CHeapObj-new", p);
+#endif
+  return p;
+}
+
 void CHeapObj::operator delete(void* p){
  FreeHeap(p);
 }
diff -r 3449f5e02cc4 -r 2a3da7eaf4a6 src/share/vm/memory/allocation.hpp
--- a/src/share/vm/memory/allocation.hpp	Tue Apr 12 14:18:53 2011 -0700
+++ b/src/share/vm/memory/allocation.hpp	Wed Apr 27 09:09:57 2011 -0400
@@ -34,6 +34,8 @@
 #include "opto/c2_globals.hpp"
 #endif
 
+#include <new>
+
 #define ARENA_ALIGN_M1 (((size_t)(ARENA_AMALLOC_ALIGNMENT)) - 1)
 #define ARENA_ALIGN_MASK (~((size_t)ARENA_ALIGN_M1))
 #define ARENA_ALIGN(x) ((((size_t)(x)) + ARENA_ALIGN_M1) & ARENA_ALIGN_MASK)
@@ -99,6 +101,7 @@
 class CHeapObj ALLOCATION_SUPER_CLASS_SPEC {
  public:
   void* operator new(size_t size);
+  void* operator new (size_t size, const std::nothrow_t&  nothrow_constant);
   void  operator delete(void* p);
   void* new_array(size_t size);
 };
diff -r 3449f5e02cc4 -r 2a3da7eaf4a6 src/share/vm/utilities/elfFile.cpp
--- a/src/share/vm/utilities/elfFile.cpp	Tue Apr 12 14:18:53 2011 -0700
+++ b/src/share/vm/utilities/elfFile.cpp	Wed Apr 27 09:09:57 2011 -0400
@@ -29,6 +29,7 @@
 #include <string.h>
 #include <stdio.h>
 #include <limits.h>
+#include <new>
 
 #include "memory/allocation.inline.hpp"
 #include "utilities/decoder.hpp"
@@ -46,7 +47,7 @@
   m_status = Decoder::no_error;
 
   int len = strlen(filepath) + 1;
-  m_filepath = NEW_C_HEAP_ARRAY(char, len);
+  m_filepath = (const char*)os::malloc(len * sizeof(char));
   if (m_filepath != NULL) {
     strcpy((char*)m_filepath, filepath);
     m_file = fopen(filepath, "r");
@@ -74,7 +75,7 @@
   }
 
   if (m_filepath != NULL) {
-    FREE_C_HEAP_ARRAY(char, m_filepath);
+    os::free((void*)m_filepath);
   }
 
   if (m_next != NULL) {
@@ -120,14 +121,14 @@
       }
       // string table
       if (shdr.sh_type == SHT_STRTAB) {
-        ElfStringTable* table = new ElfStringTable(m_file, shdr, index);
+        ElfStringTable* table = new (std::nothrow) ElfStringTable(m_file, shdr, index);
         if (table == NULL) {
           m_status = Decoder::out_of_memory;
           return false;
         }
         add_string_table(table);
       } else if (shdr.sh_type == SHT_SYMTAB || shdr.sh_type == SHT_DYNSYM) {
-        ElfSymbolTable* table = new ElfSymbolTable(m_file, shdr);
+        ElfSymbolTable* table = new (std::nothrow) ElfSymbolTable(m_file, shdr);
         if (table == NULL) {
           m_status = Decoder::out_of_memory;
           return false;
diff -r 3449f5e02cc4 -r 2a3da7eaf4a6 src/share/vm/utilities/elfStringTable.cpp
--- a/src/share/vm/utilities/elfStringTable.cpp	Tue Apr 12 14:18:53 2011 -0700
+++ b/src/share/vm/utilities/elfStringTable.cpp	Wed Apr 27 09:09:57 2011 -0400
@@ -27,6 +27,7 @@
 #ifndef _WINDOWS
 
 #include "memory/allocation.inline.hpp"
+#include "runtime/os.hpp"
 #include "utilities/elfStringTable.hpp"
 
 // We will try to load whole string table into memory if we can.
@@ -41,14 +42,14 @@
 
   // try to load the string table
   long cur_offset = ftell(file);
-  m_table = (char*)NEW_C_HEAP_ARRAY(char, shdr.sh_size);
+  m_table = (char*)os::malloc(sizeof(char) * shdr.sh_size);
   if (m_table != NULL) {
     // if there is an error, mark the error
     if (fseek(file, shdr.sh_offset, SEEK_SET) ||
       fread((void*)m_table, shdr.sh_size, 1, file) != 1 ||
       fseek(file, cur_offset, SEEK_SET)) {
       m_status = Decoder::file_invalid;
-      FREE_C_HEAP_ARRAY(char, m_table);
+      os::free((void*)m_table);
       m_table = NULL;
     }
   } else {
@@ -58,7 +59,7 @@
 
 ElfStringTable::~ElfStringTable() {
   if (m_table != NULL) {
-    FREE_C_HEAP_ARRAY(char, m_table);
+    os::free((void*)m_table);
   }
 
   if (m_next != NULL) {