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comparison src/share/vm/runtime/os.hpp @ 10969:a837fa3d3f86

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8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint Summary: Detect mmap() commit failures in Linux and Solaris os::commit_memory() impls and call vm_exit_out_of_memory(). Add os::commit_memory_or_exit(). Also tidy up some NMT accounting and some mmap() return value checking. Reviewed-by: zgu, stefank, dholmes, dsamersoff
author dcubed
date Thu, 13 Jun 2013 11:16:38 -0700
parents f2110083203d
children 59b052799158 980532a806a5
comparison
equal deleted inserted replaced
10405:f2110083203d 10969:a837fa3d3f86
76 MaxPriority = 10, // Highest priority, used for WatcherThread 76 MaxPriority = 10, // Highest priority, used for WatcherThread
77 // ensures that VMThread doesn't starve profiler 77 // ensures that VMThread doesn't starve profiler
78 CriticalPriority = 11 // Critical thread priority 78 CriticalPriority = 11 // Critical thread priority
79 }; 79 };
80 80
81 // Executable parameter flag for os::commit_memory() and
82 // os::commit_memory_or_exit().
83 const bool ExecMem = true;
84
81 // Typedef for structured exception handling support 85 // Typedef for structured exception handling support
82 typedef void (*java_call_t)(JavaValue* value, methodHandle* method, JavaCallArguments* args, Thread* thread); 86 typedef void (*java_call_t)(JavaValue* value, methodHandle* method, JavaCallArguments* args, Thread* thread);
83 87
84 class os: AllStatic { 88 class os: AllStatic {
85 public: 89 public:
102 static char* pd_reserve_memory(size_t bytes, char* addr = 0, 106 static char* pd_reserve_memory(size_t bytes, char* addr = 0,
103 size_t alignment_hint = 0); 107 size_t alignment_hint = 0);
104 static char* pd_attempt_reserve_memory_at(size_t bytes, char* addr); 108 static char* pd_attempt_reserve_memory_at(size_t bytes, char* addr);
105 static void pd_split_reserved_memory(char *base, size_t size, 109 static void pd_split_reserved_memory(char *base, size_t size,
106 size_t split, bool realloc); 110 size_t split, bool realloc);
107 static bool pd_commit_memory(char* addr, size_t bytes, bool executable = false); 111 static bool pd_commit_memory(char* addr, size_t bytes, bool executable);
108 static bool pd_commit_memory(char* addr, size_t size, size_t alignment_hint, 112 static bool pd_commit_memory(char* addr, size_t size, size_t alignment_hint,
109 bool executable = false); 113 bool executable);
114 // Same as pd_commit_memory() that either succeeds or calls
115 // vm_exit_out_of_memory() with the specified mesg.
116 static void pd_commit_memory_or_exit(char* addr, size_t bytes,
117 bool executable, const char* mesg);
118 static void pd_commit_memory_or_exit(char* addr, size_t size,
119 size_t alignment_hint,
120 bool executable, const char* mesg);
110 static bool pd_uncommit_memory(char* addr, size_t bytes); 121 static bool pd_uncommit_memory(char* addr, size_t bytes);
111 static bool pd_release_memory(char* addr, size_t bytes); 122 static bool pd_release_memory(char* addr, size_t bytes);
112 123
113 static char* pd_map_memory(int fd, const char* file_name, size_t file_offset, 124 static char* pd_map_memory(int fd, const char* file_name, size_t file_offset,
114 char *addr, size_t bytes, bool read_only = false, 125 char *addr, size_t bytes, bool read_only = false,
259 size_t alignment_hint, MEMFLAGS flags); 270 size_t alignment_hint, MEMFLAGS flags);
260 static char* reserve_memory_aligned(size_t size, size_t alignment); 271 static char* reserve_memory_aligned(size_t size, size_t alignment);
261 static char* attempt_reserve_memory_at(size_t bytes, char* addr); 272 static char* attempt_reserve_memory_at(size_t bytes, char* addr);
262 static void split_reserved_memory(char *base, size_t size, 273 static void split_reserved_memory(char *base, size_t size,
263 size_t split, bool realloc); 274 size_t split, bool realloc);
264 static bool commit_memory(char* addr, size_t bytes, bool executable = false); 275 static bool commit_memory(char* addr, size_t bytes, bool executable);
265 static bool commit_memory(char* addr, size_t size, size_t alignment_hint, 276 static bool commit_memory(char* addr, size_t size, size_t alignment_hint,
266 bool executable = false); 277 bool executable);
278 // Same as commit_memory() that either succeeds or calls
279 // vm_exit_out_of_memory() with the specified mesg.
280 static void commit_memory_or_exit(char* addr, size_t bytes,
281 bool executable, const char* mesg);
282 static void commit_memory_or_exit(char* addr, size_t size,
283 size_t alignment_hint,
284 bool executable, const char* mesg);
267 static bool uncommit_memory(char* addr, size_t bytes); 285 static bool uncommit_memory(char* addr, size_t bytes);
268 static bool release_memory(char* addr, size_t bytes); 286 static bool release_memory(char* addr, size_t bytes);
269 287
270 enum ProtType { MEM_PROT_NONE, MEM_PROT_READ, MEM_PROT_RW, MEM_PROT_RWX }; 288 enum ProtType { MEM_PROT_NONE, MEM_PROT_READ, MEM_PROT_RW, MEM_PROT_RWX };
271 static bool protect_memory(char* addr, size_t bytes, ProtType prot, 289 static bool protect_memory(char* addr, size_t bytes, ProtType prot,