dqn: Add virtual memory funtions
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79
dqn.h
79
dqn.h
@ -798,6 +798,14 @@ DQN_API void Dqn_LogVDefault(Dqn_LogType type, void *user_data, char const *file
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DQN_API void Dqn_LogV (Dqn_LogType type, void *user_data, char const *file, Dqn_uint file_len, char const *func, Dqn_uint func_len, Dqn_uint line, char const *fmt, va_list va);
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DQN_API void Dqn_Log (Dqn_LogType type, void *user_data, char const *file, Dqn_uint file_len, char const *func, Dqn_uint func_len, Dqn_uint line, char const *fmt, ...);
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// -------------------------------------------------------------------------------------------------
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// NOTE: Dqn_Virtual
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// -------------------------------------------------------------------------------------------------
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DQN_API void *Dqn_VirtualReserve(Dqn_usize size, Dqn_b32 commit);
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DQN_API Dqn_b32 Dqn_VirtualCommit(void *ptr, Dqn_usize size);
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DQN_API void Dqn_VirtualDecommit(void *ptr, Dqn_usize size);
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DQN_API void Dqn_VirtualRelease(void *ptr, Dqn_usize size);
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// -------------------------------------------------------------------------------------------------
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// NOTE: Dqn_AllocationTracer
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// -------------------------------------------------------------------------------------------------
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@ -3067,8 +3075,7 @@ DQN_API T *Dqn_ListAt(Dqn_List<T> *list, Dqn_isize index, Dqn_ListChunk<T> **at_
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// NOTE: Allocation Type
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#define MEM_RESERVE 0x00002000
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#define MEM_COMMIT 0x00001000
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// NOTE: Free Type
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#define MEM_DECOMMIT 0x00004000
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#define MEM_RELEASE 0x00008000
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// NOTE: Protect
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@ -3203,11 +3210,11 @@ DQN_API T *Dqn_ListAt(Dqn_List<T> *list, Dqn_isize index, Dqn_ListChunk<T> **at_
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unsigned long dwReserved1;
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wchar_t cFileName[MAX_PATH];
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wchar_t cAlternateFileName[14];
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#ifdef _MAC
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#ifdef _MAC
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unsigned long dwFileType;
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unsigned long dwCreatorType;
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unsigned short wFinderFlags;
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#endif
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#endif
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} WIN32_FIND_DATAW;
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typedef enum {
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@ -3301,6 +3308,7 @@ DQN_API T *Dqn_ListAt(Dqn_List<T> *list, Dqn_isize index, Dqn_ListChunk<T> **at_
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void __stdcall Sleep (unsigned long dwMilliseconds);
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void * __stdcall VirtualAlloc (void *lpAddress, size_t dwSize, unsigned long flAllocationType, unsigned long flProtect);
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/*BOOL*/ int __stdcall VirtualProtect (void *lpAddress, size_t dwSize, unsigned long flNewProtect, unsigned long *lpflOldProtect);
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/*BOOL*/ int __stdcall VirtualFree (void *lpAddress, size_t dwSize, unsigned long dwFreeType);
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void __stdcall GetSystemInfo (SYSTEM_INFO *system_info);
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@ -3335,6 +3343,7 @@ DQN_API T *Dqn_ListAt(Dqn_List<T> *list, Dqn_isize index, Dqn_ListChunk<T> **at_
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#include <sys/random.h> // getrandom
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#include <sys/stat.h> // stat
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#include <sys/sendfile.h> // sendfile
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#include <sys/mman.h> // mmap
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#include <time.h> // clock_gettime, nanosleep
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#include <unistd.h> // access
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#endif
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@ -3555,6 +3564,68 @@ DQN_API void Dqn_Log(Dqn_LogType type, void *user_data, char const *file, Dqn_ui
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va_end(va);
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}
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// -------------------------------------------------------------------------------------------------
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// NOTE: Dqn_Virtual
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// -------------------------------------------------------------------------------------------------
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DQN_API void *Dqn_VirtualReserve(Dqn_usize size, Dqn_b32 commit)
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{
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#if defined(DQN_OS_WIN32)
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unsigned long flags = MEM_RESERVE;
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if (commit)
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flags |= MEM_COMMIT;
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void *result = VirtualAlloc(nullptr, size, MEM_RESERVE, PAGE_READWRITE);
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#elif defined(DQN_OS_UNIX)
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unsigned flags = PROT_NONE;
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if (commit)
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flags = PROT_READ | PROT_WRITE;
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void *result = mmap(nullptr, size, flags, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
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if (result == MAP_FAILED)
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result = nullptr;
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#else
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#error "Missing implementation for Dqn_VirtualReserve"
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#endif
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return result;
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}
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DQN_API Dqn_b32 Dqn_VirtualCommit(void *ptr, Dqn_usize size)
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{
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#if defined(DQN_OS_WIN32)
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Dqn_b32 result = VirtualAlloc(ptr, size, MEM_COMMIT, PAGE_READWRITE) != nullptr;
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#elif defined(DQN_OS_UNIX)
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Dqn_b32 result = mprotect(ptr, size, PROT_READ|PROT_WRITE) == 0;
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#else
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#error "Missing implementation for Dqn_VirtualCommit"
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#endif
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return result;
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}
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DQN_API void Dqn_VirtualDecommit(void *ptr, Dqn_usize size)
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{
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#if defined(DQN_OS_WIN32)
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VirtualFree(ptr, size, MEM_DECOMMIT);
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#elif defined(DQN_OS_UNIX)
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mprotect(ptr, size, PROT_NONE)
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madvise(ptr, size, MADV_FREE)
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#else
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#error "Missing implementation for Dqn_VirtualDecommit"
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#endif
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}
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DQN_API void Dqn_VirtualRelease(void *ptr, Dqn_usize size)
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{
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#if defined(DQN_OS_WIN32)
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VirtualFree(ptr, size, MEM_RELEASE);
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#elif defined(DQN_OS_UNIX)
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munmap(ptr, size);
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#else
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#error "Missing implementation for Dqn_VirtualRelease"
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#endif
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}
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// -------------------------------------------------------------------------------------------------
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// NOTE: Dqn_AllocationTracer
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// -------------------------------------------------------------------------------------------------
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