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Made ImFileOpen reuse a memory buffer so .ini saving doesn't allocate once every time. Added commented out MemAlloc/MemFree debug log.

This commit is contained in:
ocornut 2023-09-22 14:41:30 +02:00
parent d6360c1ba9
commit daf49e9d82
1 changed files with 12 additions and 4 deletions
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16
imgui.cpp
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@ -2037,8 +2037,9 @@ ImFileHandle ImFileOpen(const char* filename, const char* mode)
// Previously we used ImTextCountCharsFromUtf8/ImTextStrFromUtf8 here but we now need to support ImWchar16 and ImWchar32!
const int filename_wsize = ::MultiByteToWideChar(CP_UTF8, 0, filename, -1, NULL, 0);
const int mode_wsize = ::MultiByteToWideChar(CP_UTF8, 0, mode, -1, NULL, 0);
ImVector<wchar_t> buf;
buf.resize(filename_wsize + mode_wsize);
ImGuiContext& g = *GImGui;
g.TempBuffer.reserve((filename_wsize + mode_wsize) * sizeof(wchar_t));
wchar_t* buf = (wchar_t*)(void*)g.TempBuffer.Data;
::MultiByteToWideChar(CP_UTF8, 0, filename, -1, (wchar_t*)&buf[0], filename_wsize);
::MultiByteToWideChar(CP_UTF8, 0, mode, -1, (wchar_t*)&buf[filename_wsize], mode_wsize);
return ::_wfopen((const wchar_t*)&buf[0], (const wchar_t*)&buf[filename_wsize]);
@ -4225,17 +4226,24 @@ float ImGui::CalcWrapWidthForPos(const ImVec2& pos, float wrap_pos_x)
// IM_ALLOC() == ImGui::MemAlloc()
void* ImGui::MemAlloc(size_t size)
{
void* ptr = (*GImAllocatorAllocFunc)(size, GImAllocatorUserData);
if (ImGuiContext* ctx = GImGui)
{
ctx->IO.MetricsActiveAllocations++;
return (*GImAllocatorAllocFunc)(size, GImAllocatorUserData);
//printf("[%05d] MemAlloc(%d) -> 0x%p\n", ctx->FrameCount, size, ptr);
}
return ptr;
}
// IM_FREE() == ImGui::MemFree()
void ImGui::MemFree(void* ptr)
{
if (ptr)
if (ptr != NULL)
if (ImGuiContext* ctx = GImGui)
{
ctx->IO.MetricsActiveAllocations--;
//printf("[%05d] MemFree(0x%p)\n", ctx->FrameCount, ptr);
}
return (*GImAllocatorFreeFunc)(ptr, GImAllocatorUserData);
}