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comparison src/os/solaris/vm/os_solaris.cpp @ 477:24fda36852ce

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6727377: VM stack guard pages on Windows should PAGE_READWRITE not PAGE_EXECUTE_READWRITE Summary: Make reguard_stack change access to RW, not execute and use os::protect_memory with the new parameter when change needed to X. Reviewed-by: acorn, jcoomes
author coleenp
date Wed, 10 Dec 2008 15:14:29 -0800
parents 85f1b9537f70
children 8a25d96bcf08
comparison
equal deleted inserted replaced
473:3ad2b8576c4a 477:24fda36852ce
3024 return retVal == 0; 3024 return retVal == 0;
3025 } 3025 }
3026 3026
3027 // Protect memory (Used to pass readonly pages through 3027 // Protect memory (Used to pass readonly pages through
3028 // JNI GetArray<type>Elements with empty arrays.) 3028 // JNI GetArray<type>Elements with empty arrays.)
3029 // Also, used for serialization page and for compressed oops null pointer
3030 // checking.
3029 bool os::protect_memory(char* addr, size_t bytes, ProtType prot, 3031 bool os::protect_memory(char* addr, size_t bytes, ProtType prot,
3030 bool is_committed) { 3032 bool is_committed) {
3031 unsigned int p = 0; 3033 unsigned int p = 0;
3032 switch (prot) { 3034 switch (prot) {
3033 case MEM_PROT_NONE: p = PROT_NONE; break; 3035 case MEM_PROT_NONE: p = PROT_NONE; break;
3047 bool os::guard_memory(char* addr, size_t bytes) { 3049 bool os::guard_memory(char* addr, size_t bytes) {
3048 return solaris_mprotect(addr, bytes, PROT_NONE); 3050 return solaris_mprotect(addr, bytes, PROT_NONE);
3049 } 3051 }
3050 3052
3051 bool os::unguard_memory(char* addr, size_t bytes) { 3053 bool os::unguard_memory(char* addr, size_t bytes) {
3052 return solaris_mprotect(addr, bytes, PROT_READ|PROT_WRITE|PROT_EXEC); 3054 return solaris_mprotect(addr, bytes, PROT_READ|PROT_WRITE);
3053 } 3055 }
3054 3056
3055 // Large page support 3057 // Large page support
3056 3058
3057 // UseLargePages is the master flag to enable/disable large page memory. 3059 // UseLargePages is the master flag to enable/disable large page memory.