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Last change
on this file since 314c9d8 was a573c22, checked in by Peter A. Buhr <pabuhr@…>, 6 years ago |
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example programs updated for concurrency paper
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Property mode
set to
100644
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File size:
1.6 KB
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| [466fa01] | 1 | #include <stdio.h>
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| 2 |
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| 3 | typedef struct PingPong {
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| [a573c22] | 4 | int restart; // style 1
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| [466fa01] | 5 | int N, i;
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| [a573c22] | 6 | const char * name;
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| [d7a02ae] | 7 | struct PingPong * partner;
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| [a573c22] | 8 | void * next; // style 2
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| [466fa01] | 9 | } PingPong;
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| [a573c22] | 10 | #define PPCtor( name, N ) { 0, N, 0, name, NULL, NULL }
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| 11 |
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| [466fa01] | 12 | void comain( PingPong * pp ) __attribute__(( noinline ));
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| 13 | void comain( PingPong * pp ) {
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| 14 | #if 0
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| [a573c22] | 15 | if ( __builtin_expect(pp->next != 0, 1) ) goto *pp->next;
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| 16 | pp->next = &&cycle;
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| 17 | for ( ; pp->i < pp->N; pp->i += 1 ) {
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| 18 | #ifdef PRINT
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| 19 | printf( "%s %d\n", pp->name, pp->i );
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| 20 | #endif // PRINT
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| 21 | asm( "mov %0,%%rdi" : "=m" (pp->partner) );
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| [466fa01] | 22 | asm( "mov %rdi,%rax" );
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| 23 | #ifndef OPT
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| 24 | #ifdef PRINT
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| 25 | asm( "add $16, %rsp" );
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| 26 | #endif // PRINT
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| 27 | asm( "popq %rbp" );
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| 28 | #endif // ! OPT
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| 29 |
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| 30 | #ifdef OPT
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| 31 | #ifdef PRINT
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| 32 | asm( "popq %rbx" );
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| 33 | #endif // PRINT
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| 34 | #endif // OPT
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| 35 | asm( "jmp comain" );
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| [a573c22] | 36 | cycle: ;
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| 37 | } // for
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| [466fa01] | 38 | #endif // 0
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| 39 |
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| [a573c22] | 40 | #if 1
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| 41 | static void * states[] = {&&s0, &&s1};
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| 42 | goto *states[pp->restart];
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| 43 | s0: pp->restart = 1;
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| [466fa01] | 44 | for ( ; pp->i < pp->N; pp->i += 1 ) {
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| 45 | #ifdef PRINT
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| 46 | printf( "%s %d\n", pp->name, pp->i );
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| 47 | #endif // PRINT
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| 48 | asm( "mov %0,%%rdi" : "=m" (pp->partner) );
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| 49 | asm( "mov %rdi,%rax" );
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| 50 | #ifndef OPT
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| 51 | #ifdef PRINT
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| 52 | asm( "add $16, %rsp" );
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| 53 | #endif // PRINT
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| 54 | asm( "popq %rbp" );
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| 55 | #endif // ! OPT
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| 56 |
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| 57 | #ifdef OPT
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| 58 | #ifdef PRINT
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| 59 | asm( "popq %rbx" );
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| 60 | #endif // PRINT
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| 61 | #endif // OPT
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| 62 | asm( "jmp comain" );
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| [a573c22] | 63 | s1: ;
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| [466fa01] | 64 | } // for
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| [a573c22] | 65 | #endif // 0
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| [466fa01] | 66 | }
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| 67 |
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| 68 | int main() {
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| 69 | enum { N =
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| 70 | #ifdef PRINT
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| 71 | 5
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| 72 | #else
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| 73 | 1000000000
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| 74 | #endif // PRINT
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| 75 | };
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| 76 | PingPong ping = PPCtor( "ping", N ), pong = PPCtor( "pong", N );
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| 77 | ping.partner = &pong; pong.partner = &ping;
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| 78 | comain( &ping );
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| 79 | }
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| 80 |
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| 81 | // Local Variables: //
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| 82 | // tab-width: 4 //
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| [a573c22] | 83 | // compile-command: "gcc-9 -g -DPRINT PingPong.c" //
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| [466fa01] | 84 | // End: //
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