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8224221: add memprotect calls to event log

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Reviewed-by: dholmes, mdoerr
This commit is contained in:
Matthias Baesken 2019-05-23 15:15:01 +02:00
parent b77c2ea4e9
commit 247729cdd7
6 changed files with 16 additions and 7 deletions
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3
src/hotspot/os/solaris/os_solaris.cpp
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@ -2666,6 +2666,7 @@ bool os::pd_release_memory(char* addr, size_t bytes) {
static bool solaris_mprotect(char* addr, size_t bytes, int prot) {
assert(addr == (char*)align_down((uintptr_t)addr, os::vm_page_size()),
"addr must be page aligned");
Events::log(NULL, "Protecting memory [" INTPTR_FORMAT "," INTPTR_FORMAT "] with protection modes %x", p2i(addr), p2i(addr+bytes), prot);
int retVal = mprotect(addr, bytes, prot);
return retVal == 0;
}
@ -4229,6 +4230,7 @@ jint os::init_2(void) {
// Mark the polling page as unreadable
void os::make_polling_page_unreadable(void) {
Events::log(NULL, "Protecting polling page " INTPTR_FORMAT " with PROT_NONE", p2i(_polling_page));
if (mprotect((char *)_polling_page, page_size, PROT_NONE) != 0) {
fatal("Could not disable polling page");
}
@ -4236,6 +4238,7 @@ void os::make_polling_page_unreadable(void) {
// Mark the polling page as readable
void os::make_polling_page_readable(void) {
Events::log(NULL, "Protecting polling page " INTPTR_FORMAT " with PROT_READ", p2i(_polling_page));
if (mprotect((char *)_polling_page, page_size, PROT_READ) != 0) {
fatal("Could not enable polling page");
}