projects / apple / libc.git / blame
| Commit | Line | Data |
|---|---|---|
| e9ce8d39 A |
1 | /* |
| 2 | * Copyright (c) 1999 Apple Computer, Inc. All rights reserved. | |
| 3 | * | |
| 4 | * @APPLE_LICENSE_HEADER_START@ | |
| 5 | * | |
| 6 | * The contents of this file constitute Original Code as defined in and | |
| 7 | * are subject to the Apple Public Source License Version 1.1 (the | |
| 8 | * "License"). You may not use this file except in compliance with the | |
| 9 | * License. Please obtain a copy of the License at | |
| 10 | * http://www.apple.com/publicsource and read it before using this file. | |
| 11 | * | |
| 12 | * This Original Code and all software distributed under the License are | |
| 13 | * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER | |
| 14 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, | |
| 15 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| 16 | * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the | |
| 17 | * License for the specific language governing rights and limitations | |
| 18 | * under the License. | |
| 19 | * | |
| 20 | * @APPLE_LICENSE_HEADER_END@ | |
| 21 | */ | |
| 22 | /* | |
| 23 | * Mach Operating System | |
| 24 | * Copyright (c) 1989 Carnegie-Mellon University | |
| 25 | * All rights reserved. The CMU software License Agreement specifies | |
| 26 | * the terms and conditions for use and redistribution. | |
| 27 | */ | |
| 28 | ||
| 29 | /* | |
| 30 | * HISTORY | |
| 31 | * 08-Mar-90 Avadis Tevanian, Jr. (avie) at NeXT | |
| 32 | * Added errno field to cproc structure. | |
| 33 | * | |
| 34 | */ | |
| 35 | ||
| 36 | /* | |
| 37 | * cthread_internals.h - by Eric Cooper | |
| 38 | * | |
| 39 | * Private definitions for the C Threads implementation. | |
| 40 | * | |
| 41 | * The cproc structure is used for different implementations | |
| 42 | * of the basic schedulable units that execute cthreads. | |
| 43 | * | |
| 44 | * MTHREAD MACH threads; single address space, | |
| 45 | * kernel-mode preemptive scheduling | |
| 46 | */ | |
| 47 | #include <assert.h> | |
| 48 | #include <mach/mach.h> | |
| 49 | #include <mach/mach_error.h> | |
| 50 | ||
| 51 | /* | |
| 52 | * Low-level thread implementation. | |
| 53 | * This structure must agree with struct ur_cthread in cthreads.h | |
| 54 | */ | |
| 55 | typedef struct cproc { | |
| 56 | struct cproc *next; /* for lock, condition, and ready queues */ | |
| 57 | struct cproc *incarnation; /* for cthread_self() */ | |
| 58 | int state; | |
| 59 | mach_port_t reply_port; /* for mig_get_reply_port() */ | |
| 60 | ||
| 61 | mach_port_t wait_port; | |
| 62 | ||
| 63 | int id; | |
| 64 | struct cproc *link; /* so all cprocs can be found | |
| 65 | after a fork() */ | |
| 66 | int flags; | |
| 67 | ||
| 68 | unsigned int stack_base; | |
| 69 | unsigned int stack_size; | |
| 70 | int error; | |
| 71 | ||
| 72 | } *cproc_t; | |
| 73 | ||
| 74 | #define NO_CPROC ((cproc_t) 0) | |
| 75 | #define cproc_self() ((cproc_t) ur_cthread_self()) | |
| 76 | extern void cthread_set_self(cproc_t p); | |
| 77 | ||
| 78 | /* | |
| 79 | * Possible cproc states. | |
| 80 | */ | |
| 81 | #define CPROC_RUNNING 0 | |
| 82 | #define CPROC_SPINNING 1 | |
| 83 | #define CPROC_BLOCKED 2 | |
| 84 | ||
| 85 | /* | |
| 86 | * The cproc flag bits. | |
| 87 | */ | |
| 88 | #define CPROC_INITIAL_STACK 0x1 | |
| 89 | #define CPROC_NOCACHE_THREAD /* Don't try to cache this cthread on exit */ | |
| 90 | ||
| 91 | /* | |
| 92 | * C Threads imports: | |
| 93 | */ | |
| 94 | #ifdef __STRICT_BSD__ | |
| 95 | extern char *malloc(); | |
| 96 | #endif /* __STRICT_BSD__ */ | |
| 97 | ||
| 98 | /* | |
| 99 | * Mach imports: | |
| 100 | */ | |
| 101 | extern void mach_error(); | |
| 102 | ||
| 103 | /* | |
| 104 | * C library imports: | |
| 105 | */ | |
| 106 | #ifdef __STRICT_BSD__ | |
| 107 | extern exit(); | |
| 108 | #else | |
| 109 | #include <stdlib.h> | |
| 110 | #endif /* __STRICT_BSD__ */ | |
| 111 | ||
| 112 | /* | |
| 113 | * Macro for MACH kernel calls. | |
| 114 | */ | |
| 115 | #ifndef MACH_CALL | |
| 116 | #define MACH_CALL(expr, ret) { \ | |
| 117 | if (((ret) = (expr)) != KERN_SUCCESS) { \ | |
| 118 | mach_error(#expr, (ret)); \ | |
| 119 | assert(0); \ | |
| 120 | } \ | |
| 121 | } | |
| 122 | #endif | |
| 123 | ||
| 124 | /* | |
| 125 | * Debugging support. | |
| 126 | */ | |
| 127 | #ifdef CTHREADS_DEBUG | |
| 128 | ||
| 129 | #define private | |
| 130 | #define TRACE(x) if (cthread_debug) x ; else | |
| 131 | extern int cthread_debug; | |
| 132 | ||
| 133 | /* | |
| 134 | * C library imports: | |
| 135 | */ | |
| 136 | #include <stdio.h> | |
| 137 | #include <stdlib.h> | |
| 138 | #else /* CTHREADS_DEBUG */ | |
| 139 | ||
| 140 | #define private static | |
| 141 | #define TRACE(x) | |
| 142 | ||
| 143 | #endif /* DEBUG */ |