1 /** 2 * This module provides types and constants used in thread package. 3 * 4 * Copyright: Copyright Sean Kelly 2005 - 2012. 5 * License: Distributed under the 6 * $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost Software License 1.0). 7 * (See accompanying file LICENSE) 8 * Authors: Sean Kelly, Walter Bright, Alex Rønne Petersen, Martin Nowak 9 * Source: $(DRUNTIMESRC core/thread/osthread.d) 10 */ 11 12 module core.thread.types; 13 14 /** 15 * Represents the ID of a thread, as returned by $(D Thread.)$(LREF id). 16 * The exact type varies from platform to platform. 17 */ 18 version (Windows) 19 alias ThreadID = uint; 20 else 21 version (Posix) 22 { 23 import core.sys.posix.pthread; 24 25 alias ThreadID = pthread_t; 26 } 27 28 struct ll_ThreadData 29 { 30 ThreadID tid; 31 version (Windows) 32 void delegate() nothrow cbDllUnload; 33 } 34 35 version (GNU) 36 { 37 version (GNU_StackGrowsDown) 38 enum isStackGrowingDown = true; 39 else 40 enum isStackGrowingDown = false; 41 } 42 else version (LDC) 43 { 44 // The only LLVM targets as of LLVM 16 with stack growing *upwards* are 45 // apparently NVPTX and AMDGPU, both without druntime support. 46 // Note that there's an analogous `version = StackGrowsDown` in 47 // core.thread.fiber. 48 enum isStackGrowingDown = true; 49 } 50 else 51 { 52 version (X86) enum isStackGrowingDown = true; 53 else version (X86_64) enum isStackGrowingDown = true; 54 else static assert(0, "It is undefined how the stack grows on this architecture."); 55 } 56 57 package 58 { 59 version (Posix) static immutable size_t PTHREAD_STACK_MIN; 60 } 61 62 shared static this() 63 { 64 version (Posix) 65 { 66 import core.sys.posix.unistd; 67 68 PTHREAD_STACK_MIN = cast(size_t)sysconf(_SC_THREAD_STACK_MIN); 69 } 70 }