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Guard heap access with OSMutex

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Maschell 2022-02-11 20:32:39 +01:00
parent f56e6938be
commit 9e424205e0
1 changed files with 16 additions and 0 deletions
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16
source/memory_mapping.cpp
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@ -8,11 +8,14 @@
#include "CThread.h"
#include "logger.h"
#include "memory.h"
#include <coreinit/mutex.h>
#include <cstring>
#include <vector>
// #define DEBUG_FUNCTION_LINE(x,...)
OSMutex allocMutex;
void runOnAllCores(CThread::Callback callback, void *callbackArg, int32_t iAttr = 0, int32_t iPriority = 16, int32_t iStackSize = 0x8000) {
int32_t aff[] = {CThread::eAttributeAffCore2, CThread::eAttributeAffCore1, CThread::eAttributeAffCore0};
@ -389,9 +392,11 @@ void MemoryMapping_setupMemoryMapping() {
//readTestValuesFromMemory();
//runOnAllCores(writeSegmentRegister,&srTableCpy);
OSInitMutex(&allocMutex);
}
void *MemoryMapping_allocEx(uint32_t size, int32_t align, bool videoOnly) {
OSLockMutex(&allocMutex);
void *res = nullptr;
for (int32_t i = 0; /* waiting for a break */; i++) {
if (mem_mapping[i].physical_addresses == nullptr) {
@ -411,6 +416,7 @@ void *MemoryMapping_allocEx(uint32_t size, int32_t align, bool videoOnly) {
break;
}
}
OSUnlockMutex(&allocMutex);
return res;
}
@ -426,6 +432,7 @@ void MemoryMapping_free(void *ptr) {
if (ptr == nullptr) {
return;
}
OSLockMutex(&allocMutex);
auto ptr_val = (uint32_t) ptr;
for (int32_t i = 0; /* waiting for a break */; i++) {
if (mem_mapping[i].physical_addresses == nullptr) {
@ -440,6 +447,7 @@ void MemoryMapping_free(void *ptr) {
break;
}
}
OSUnlockMutex(&allocMutex);
}
uint32_t MemoryMapping_MEMGetAllocatableSize() {
@ -447,6 +455,7 @@ uint32_t MemoryMapping_MEMGetAllocatableSize() {
}
uint32_t MemoryMapping_MEMGetAllocatableSizeEx(uint32_t align) {
OSLockMutex(&allocMutex);
uint32_t res = 0;
for (int32_t i = 0; /* waiting for a break */; i++) {
if (mem_mapping[i].physical_addresses == nullptr) {
@ -458,10 +467,12 @@ uint32_t MemoryMapping_MEMGetAllocatableSizeEx(uint32_t align) {
res = curRes;
}
}
OSUnlockMutex(&allocMutex);
return res;
}
uint32_t MemoryMapping_GetFreeSpace() {
OSLockMutex(&allocMutex);
uint32_t res = 0;
for (int32_t i = 0; /* waiting for a break */; i++) {
if (mem_mapping[i].physical_addresses == nullptr) {
@ -471,10 +482,12 @@ uint32_t MemoryMapping_GetFreeSpace() {
DEBUG_FUNCTION_LINE_VERBOSE("heap at %08X MEMGetTotalFreeSizeForExpHeap: %d KiB", mem_mapping[i].effective_start_address, curRes / 1024);
res += curRes;
}
OSUnlockMutex(&allocMutex);
return res;
}
void MemoryMapping_CreateHeaps() {
OSLockMutex(&allocMutex);
for (int32_t i = 0; /* waiting for a break */; i++) {
if (mem_mapping[i].physical_addresses == nullptr) {
break;
@ -486,9 +499,11 @@ void MemoryMapping_CreateHeaps() {
auto heap = MEMCreateExpHeapEx(address, size, MEM_HEAP_FLAG_USE_LOCK);
DEBUG_FUNCTION_LINE("Created heap @%08X, size %d KiB", heap, size / 1024);
}
OSUnlockMutex(&allocMutex);
}
void MemoryMapping_DestroyHeaps() {
OSLockMutex(&allocMutex);
for (int32_t i = 0; /* waiting for a break */; i++) {
if (mem_mapping[i].physical_addresses == nullptr) {
break;
@ -500,6 +515,7 @@ void MemoryMapping_DestroyHeaps() {
memset(address, 0, size);
DEBUG_FUNCTION_LINE_VERBOSE("Destroyed heap @%08X", address);
}
OSUnlockMutex(&allocMutex);
}
uint32_t MemoryMapping_getAreaSizeFromPageTable(uint32_t start, uint32_t maxSize) {