diff options
Diffstat (limited to 'source/core/slang-platform.cpp')
| -rw-r--r-- | source/core/slang-platform.cpp | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/source/core/slang-platform.cpp b/source/core/slang-platform.cpp new file mode 100644 index 000000000..1cb2bc56e --- /dev/null +++ b/source/core/slang-platform.cpp @@ -0,0 +1,172 @@ +// slang-platform.cpp +#include "slang-platform.h" + +#include "slang-common.h" + +#ifdef _WIN32 + #define WIN32_LEAN_AND_MEAN + #define NOMINMAX + #include <Windows.h> + #undef WIN32_LEAN_AND_MEAN + #undef NOMINMAX +#else + #include "slang-string.h" + #include <dlfcn.h> +#endif + +namespace Slang +{ + // SharedLibrary + +/* static */SlangResult SharedLibrary::load(const char* filename, SharedLibrary::Handle& handleOut) +{ + StringBuilder builder; + appendPlatformFileName(UnownedStringSlice(filename), builder); + return loadWithPlatformFilename(builder.begin(), handleOut); +} + +#ifdef _WIN32 + +// Make sure SlangResult match for common standard window HRESULT +SLANG_COMPILE_TIME_ASSERT(E_FAIL == SLANG_FAIL); +SLANG_COMPILE_TIME_ASSERT(E_NOINTERFACE == SLANG_E_NO_INTERFACE); +SLANG_COMPILE_TIME_ASSERT(E_HANDLE == SLANG_E_INVALID_HANDLE); +SLANG_COMPILE_TIME_ASSERT(E_NOTIMPL == SLANG_E_NOT_IMPLEMENTED); +SLANG_COMPILE_TIME_ASSERT(E_INVALIDARG == SLANG_E_INVALID_ARG); +SLANG_COMPILE_TIME_ASSERT(E_OUTOFMEMORY == SLANG_E_OUT_OF_MEMORY); + +/* static */SlangResult PlatformUtil::appendResult(SlangResult res, StringBuilder& builderOut) +{ + if (SLANG_FAILED(res) && res != SLANG_FAIL) + { + LPWSTR buffer = nullptr; + FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_ALLOCATE_BUFFER, + nullptr, + res, + MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language + (LPWSTR)&buffer, + 0, + nullptr); + + if (buffer) + { + builderOut << " "; + // Convert to string + builderOut.Append(String::fromWString(buffer)); + LocalFree(buffer); + return SLANG_OK; + } + } + return SLANG_FAIL; +} + +/* static */SlangResult SharedLibrary::loadWithPlatformFilename(char const* platformFileName, SharedLibrary::Handle& handleOut) +{ + handleOut = nullptr; + // https://docs.microsoft.com/en-us/windows/desktop/api/libloaderapi/nf-libloaderapi-loadlibrarya + const HMODULE h = LoadLibraryA(platformFileName); + if (!h) + { + const DWORD lastError = GetLastError(); + switch (lastError) + { + case ERROR_MOD_NOT_FOUND: + case ERROR_PATH_NOT_FOUND: + case ERROR_FILE_NOT_FOUND: + { + return SLANG_E_NOT_FOUND; + } + case ERROR_INVALID_ACCESS: + case ERROR_ACCESS_DENIED: + case ERROR_INVALID_DATA: + { + return SLANG_E_CANNOT_OPEN; + } + default: break; + } + // Turn to Result, if not one of the well known errors + return HRESULT_FROM_WIN32(lastError); + } + handleOut = (Handle)h; + return SLANG_OK; +} + +/* static */void SharedLibrary::unload(Handle handle) +{ + SLANG_ASSERT(handle); + ::FreeLibrary((HMODULE)handle); +} + +/* static */SharedLibrary::FuncPtr SharedLibrary::findFuncByName(Handle handle, char const* name) +{ + SLANG_ASSERT(handle); + return (FuncPtr)GetProcAddress((HMODULE)handle, name); +} + +/* static */void SharedLibrary::appendPlatformFileName(const UnownedStringSlice& name, StringBuilder& dst) +{ + // Windows doesn't need the extension or any prefix to work + dst.Append(name); +} + +#else // _WIN32 + +/* static */SlangResult PlatformUtil::appendResult(SlangResult res, StringBuilder& builderOut) +{ + return SLANG_E_NOT_IMPLEMENTED; +} + +/* static */SlangResult SharedLibrary::loadWithPlatformFilename(char const* platformFileName, Handle& handleOut) +{ + handleOut = nullptr; + + void* h = dlopen(platformFileName, RTLD_NOW | RTLD_LOCAL); + if(!h) + { +#if 0 + // We can't output the error message here, because it will cause output when testing what code gen is available + if(auto msg = dlerror()) + { + fprintf(stderr, "error: %s\n", msg); + } +#endif + return SLANG_FAIL; + } + handleOut = (Handle)h; + return SLANG_OK; +} + +/* static */void SharedLibrary::unload(Handle handle) +{ + SLANG_ASSERT(handle); + dlclose(handle); +} + +/* static */SharedLibrary::FuncPtr SharedLibrary::findFuncByName(Handle handle, char const* name) +{ + SLANG_ASSERT(handle); + return (FuncPtr)dlsym((void*)handle, name); +} + +/* static */void SharedLibrary::appendPlatformFileName(const UnownedStringSlice& name, StringBuilder& dst) +{ +#if __CYGWIN__ + dst.Append(name); + dst.Append(".dll"); +#elif SLANG_APPLE_FAMILY + dst.Append("lib"); + dst.Append(name); + dst.Append(".dylib"); +#elif SLANG_LINUX_FAMILY + dst.Append("lib"); + dst.Append(name); + dst.Append(".so"); +#else + // Just guess we can do with the name on it's own + dst.Append(name); +#endif +} + +#endif // _WIN32 + +} |