source: src/libcfa/concurrency/invoke.c @ 0157ca7

aaron-thesisarm-ehcleanup-dtorsdeferred_resndemanglerjacob/cs343-translationjenkins-sandboxnew-astnew-ast-unique-exprnew-envno_listpersistent-indexerresolv-newwith_gc
Last change on this file since 0157ca7 was 0157ca7, checked in by Thierry Delisle <tdelisle@…>, 5 years ago

Fixed incorrectly hand-mangled name

  • Property mode set to 100644
File size: 4.4 KB
Line 
1//                              -*- Mode: C -*-
2//
3// Cforall Version 1.0.0 Copyright (C) 2016 University of Waterloo
4//
5// The contents of this file are covered under the licence agreement in the
6// file "LICENCE" distributed with Cforall.
7//
8// invoke.c --
9//
10// Author           : Thierry Delisle
11// Created On       : Tue Jan 17 12:27:26 2016
12// Last Modified By : Thierry Delisle
13// Last Modified On : --
14// Update Count     : 0
15//
16
17#include <stdbool.h>
18#include <stdlib.h>
19#include <stdio.h>
20
21#include "libhdr.h"
22#include "invoke.h"
23
24#define __CFA_INVOKE_PRIVATE__
25#include "invoke.h"
26
27// magically invoke the "main" of the most derived class
28// Called from the kernel when starting a coroutine or task so must switch back to user mode.
29
30extern void __suspend_no_inline__F___1(void);
31extern void __signal_termination__F_P7sthread__1(struct thread*);
32
33void CtxInvokeCoroutine(
34      void (*main)(void *), 
35      struct coroutine *(*get_coroutine)(void *), 
36      void *this
37) {
38      // LIB_DEBUG_PRINTF("Invoke Coroutine : Received %p (main %p, get_c %p)\n", this, main, get_coroutine);
39
40      struct coroutine* cor = get_coroutine( this );
41
42      if(cor->state == Primed) {
43            __suspend_no_inline__F___1();
44      }
45
46      cor->state = Active;
47
48      main( this );
49
50      cor->state = Halt;
51      cor->notHalted = false;
52
53      //Final suspend, should never return
54      __suspend_no_inline__F___1();
55      assertf(false, "Resumed dead coroutine");
56}
57
58void CtxInvokeThread(
59      void (*main)(void *), 
60      struct thread *(*get_thread)(void *), 
61      void *this
62) {
63      // LIB_DEBUG_PRINTF("Invoke Thread : Received %p (main %p, get_t %p)\n", this, main, get_thread);
64
65      __suspend_no_inline__F___1();
66
67      struct thread* thrd = get_thread( this );
68      struct coroutine* cor = &thrd->c;
69      cor->state = Active;
70
71      // LIB_DEBUG_PRINTF("Invoke Thread : invoking main %p (args %p)\n", main, this);
72      main( this );
73
74      __signal_termination__F_P7sthread__1(thrd);
75
76      //Final suspend, should never return
77      __suspend_no_inline__F___1();
78      assertf(false, "Resumed dead thread");
79}
80
81
82void CtxStart(
83      void (*main)(void *), 
84      struct coroutine *(*get_coroutine)(void *), 
85      void *this, 
86      void (*invoke)(void *)
87) {
88      // LIB_DEBUG_PRINTF("StartCoroutine : Passing in %p (main %p) to invoke (%p) from start (%p)\n", this, main, invoke, CtxStart);
89
90      struct coStack_t* stack = &get_coroutine( this )->stack;
91
92#if defined( __i386__ )
93
94        struct FakeStack {
95            void *fixedRegisters[3];                    // fixed registers ebx, edi, esi (popped on 1st uSwitch, values unimportant)
96            void *rturn;                                      // where to go on return from uSwitch
97            void *dummyReturn;                          // fake return compiler would have pushed on call to uInvoke
98            void *argument[3];                          // for 16-byte ABI, 16-byte alignment starts here
99            void *padding;                              // padding to force 16-byte alignment, as "base" is 16-byte aligned
100        };
101
102        ((struct machine_context_t *)stack->context)->SP = (char *)stack->base - sizeof( struct FakeStack );
103        ((struct machine_context_t *)stack->context)->FP = NULL;                // terminate stack with NULL fp
104
105        ((struct FakeStack *)(((struct machine_context_t *)stack->context)->SP))->dummyReturn = NULL;
106        ((struct FakeStack *)(((struct machine_context_t *)stack->context)->SP))->argument[0] = this;     // argument to invoke
107        ((struct FakeStack *)(((struct machine_context_t *)stack->context)->SP))->rturn = invoke;
108
109#elif defined( __x86_64__ )
110
111      struct FakeStack {
112            void *fixedRegisters[5];                    // fixed registers rbx, r12, r13, r14, r15
113            void *rturn;                                        // where to go on return from uSwitch
114            void *dummyReturn;                          // NULL return address to provide proper alignment
115      };
116
117      ((struct machine_context_t *)stack->context)->SP = (char *)stack->base - sizeof( struct FakeStack );
118      ((struct machine_context_t *)stack->context)->FP = NULL;          // terminate stack with NULL fp
119
120      ((struct FakeStack *)(((struct machine_context_t *)stack->context)->SP))->dummyReturn = NULL;
121      ((struct FakeStack *)(((struct machine_context_t *)stack->context)->SP))->rturn = CtxInvokeStub;
122      ((struct FakeStack *)(((struct machine_context_t *)stack->context)->SP))->fixedRegisters[0] = this;
123      ((struct FakeStack *)(((struct machine_context_t *)stack->context)->SP))->fixedRegisters[1] = invoke;
124#else
125      #error Only __i386__ and __x86_64__ is supported for threads in cfa
126#endif
127}
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