src/hotspot/os/bsd/os_bsd.cpp

rev 51957 : 8224221: add memprotect calls to event log
Reviewed-by: dholmes, mdoerr

@@ -1954,10 +1954,11 @@
 //       problem.
 bool os::pd_commit_memory(char* addr, size_t size, bool exec) {
   int prot = exec ? PROT_READ|PROT_WRITE|PROT_EXEC : PROT_READ|PROT_WRITE;
 #ifdef __OpenBSD__
   // XXX: Work-around mmap/MAP_FIXED bug temporarily on OpenBSD
+  Events::log(NULL, "Protecting memory [" INTPTR_FORMAT "," INTPTR_FORMAT "] with protection modes %x", p2i(addr), p2i(addr+size), prot);
   if (::mprotect(addr, size, prot) == 0) {
     return true;
   }
 #else
   uintptr_t res = (uintptr_t) ::mmap(addr, size, prot,

@@ -2038,10 +2039,11 @@
 
 
 bool os::pd_uncommit_memory(char* addr, size_t size) {
 #ifdef __OpenBSD__
   // XXX: Work-around mmap/MAP_FIXED bug temporarily on OpenBSD
+  Events::log(NULL, "Protecting memory [" INTPTR_FORMAT "," INTPTR_FORMAT "] with PROT_NONE", p2i(addr), p2i(addr+size));
   return ::mprotect(addr, size, PROT_NONE) == 0;
 #else
   uintptr_t res = (uintptr_t) ::mmap(addr, size, PROT_NONE,
                                      MAP_PRIVATE|MAP_FIXED|MAP_NORESERVE|MAP_ANONYMOUS, -1, 0);
   return res  != (uintptr_t) MAP_FAILED;

@@ -2106,10 +2108,11 @@
   // protection of malloc'ed or statically allocated memory). Check the
   // caller if you hit this assert.
   assert(addr == bottom, "sanity check");
 
   size = align_up(pointer_delta(addr, bottom, 1) + size, os::Bsd::page_size());
+  Events::log(NULL, "Protecting memory [" INTPTR_FORMAT "," INTPTR_FORMAT "] with protection modes %x", p2i(bottom), p2i(bottom+size), prot);
   return ::mprotect(bottom, size, prot) == 0;
 }
 
 // Set protections specified
 bool os::protect_memory(char* addr, size_t bytes, ProtType prot,