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Simplify application/linear heap size management

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This commit is contained in:
fincs 2017-01-03 18:36:37 +01:00
parent 635d3e6640
commit d42efe636b
2 changed files with 16 additions and 18 deletions
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14
libctru/include/3ds/env.h
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@ -36,21 +36,21 @@ static inline u32 envGetAptAppId(void) {
}
/**
* @brief Gets the environment-recommended heap size.
* @return The heap size.
* @brief Gets the size of the application heap.
* @return The application heap size.
*/
static inline u32 envGetHeapSize(void) {
extern u32 __heap_size;
return __heap_size;
extern u32 __ctru_heap_size;
return __ctru_heap_size;
}
/**
* @brief Gets the environment-recommended linear heap size.
* @brief Gets the size of the linear heap.
* @return The linear heap size.
*/
static inline u32 envGetLinearHeapSize(void) {
extern u32 __linear_heap_size;
return __linear_heap_size;
extern u32 __ctru_linear_heap_size;
return __ctru_linear_heap_size;
}
/**

20
libctru/source/system/allocateHeaps.c
View File

@ -7,22 +7,20 @@ extern char* fake_heap_start;
extern char* fake_heap_end;
u32 __ctru_heap;
u32 __ctru_heap_size;
u32 __ctru_linear_heap;
u32 __ctru_linear_heap_size;
__attribute__((weak)) u32 __ctru_heap_size = 0;
__attribute__((weak)) u32 __ctru_linear_heap_size = 32*1024*1024;
void __attribute__((weak)) __system_allocateHeaps(void) {
u32 tmp=0;
if(envIsHomebrew()) {
// Use launcher-provided heap information.
__ctru_heap_size = envGetHeapSize();
__ctru_linear_heap_size = envGetLinearHeapSize();
} else {
// Distribute available memory into halves, aligning to page size.
u32 size = (osGetMemRegionFree(MEMREGION_APPLICATION) / 2) & 0xFFFFF000;
__ctru_heap_size = size;
__ctru_linear_heap_size = size;
if (!__ctru_heap_size) {
// Automatically allocate all remaining free memory, aligning to page size.
__ctru_heap_size = osGetMemRegionFree(MEMREGION_APPLICATION) &~ 0xFFF;
if (__ctru_heap_size <= __ctru_linear_heap_size)
svcBreak(USERBREAK_PANIC);
__ctru_heap_size -= __ctru_linear_heap_size;
}
// Allocate the application heap