src/share/vm/runtime/os.hpp
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@@ -76,10 +76,16 @@
MaxPriority = 10, // Highest priority, used for WatcherThread
// ensures that VMThread doesn't starve profiler
CriticalPriority = 11 // Critical thread priority
};
+// Executable parameter flag for os::commit_memory() and
+// os::commit_memory_or_exit().
+enum ExecMemFlag {
+ ExecMem = true
+};
+
// Typedef for structured exception handling support
typedef void (*java_call_t)(JavaValue* value, methodHandle* method, JavaCallArguments* args, Thread* thread);
class os: AllStatic {
public:
@@ -102,13 +108,20 @@
static char* pd_reserve_memory(size_t bytes, char* addr = 0,
size_t alignment_hint = 0);
static char* pd_attempt_reserve_memory_at(size_t bytes, char* addr);
static void pd_split_reserved_memory(char *base, size_t size,
size_t split, bool realloc);
- static bool pd_commit_memory(char* addr, size_t bytes, bool executable = false);
+ static bool pd_commit_memory(char* addr, size_t bytes, bool executable);
static bool pd_commit_memory(char* addr, size_t size, size_t alignment_hint,
- bool executable = false);
+ bool executable);
+ // Same as pd_commit_memory() that either succeeds or calls
+ // vm_exit_out_of_memory() with the specified mesg.
+ static void pd_commit_memory_or_exit(char* addr, size_t bytes,
+ bool executable, const char* mesg);
+ static void pd_commit_memory_or_exit(char* addr, size_t size,
+ size_t alignment_hint,
+ bool executable, const char* mesg);
static bool pd_uncommit_memory(char* addr, size_t bytes);
static bool pd_release_memory(char* addr, size_t bytes);
static char* pd_map_memory(int fd, const char* file_name, size_t file_offset,
char *addr, size_t bytes, bool read_only = false,
@@ -259,13 +272,20 @@
size_t alignment_hint, MEMFLAGS flags);
static char* reserve_memory_aligned(size_t size, size_t alignment);
static char* attempt_reserve_memory_at(size_t bytes, char* addr);
static void split_reserved_memory(char *base, size_t size,
size_t split, bool realloc);
- static bool commit_memory(char* addr, size_t bytes, bool executable = false);
+ static bool commit_memory(char* addr, size_t bytes, bool executable);
static bool commit_memory(char* addr, size_t size, size_t alignment_hint,
- bool executable = false);
+ bool executable);
+ // Same as commit_memory() that either succeeds or calls
+ // vm_exit_out_of_memory() with the specified mesg.
+ static void commit_memory_or_exit(char* addr, size_t bytes,
+ bool executable, const char* mesg);
+ static void commit_memory_or_exit(char* addr, size_t size,
+ size_t alignment_hint,
+ bool executable, const char* mesg);
static bool uncommit_memory(char* addr, size_t bytes);
static bool release_memory(char* addr, size_t bytes);
enum ProtType { MEM_PROT_NONE, MEM_PROT_READ, MEM_PROT_RW, MEM_PROT_RWX };
static bool protect_memory(char* addr, size_t bytes, ProtType prot,