ADT
arm-eh
ast-experimental
enum
forall-pointer-decay
jacob/cs343-translation
new-ast-unique-expr
pthread-emulation
qualifiedEnum
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Last change
on this file since 22b5b87 was 466fa01, checked in by Peter A. Buhr <pabuhr@…>, 6 years ago |
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add diagrams and example programs
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-
Property mode
set to
100644
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File size:
1.2 KB
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| Rev | Line | |
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| [466fa01] | 1 | #include <cstdio>
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| 2 |
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| 3 | struct Obj {
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| 4 | Obj() { printf( "Obj constructor\n" ); }
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| 5 | ~Obj() { printf( "Obj destructor\n" ); }
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| 6 | int i = 4;
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| 7 | };
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| 8 |
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| 9 | struct PingPong {
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| 10 | const char * name;
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| 11 | const int N;
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| 12 | PingPong * partner = nullptr;
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| 13 | int i = 0;
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| 14 | void * next = nullptr;
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| 15 |
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| 16 | PingPong( const char * name, int N ) : name(name), N(N) {}
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| 17 |
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| 18 | void operator()() {
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| 19 | if ( __builtin_expect(next != 0, 1) ) goto *next;
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| 20 | next = &&cycle;
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| 21 | for ( ; i < N; i += 1 ) {
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| 22 | Obj obj;
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| 23 | printf( "X %s %d\n", name, obj.i );
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| 24 | obj.i = 7;
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| 25 | #ifdef PRINT
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| 26 | printf( "%s %d\n", name, i );
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| 27 | #endif // PRINT
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| 28 | asm( "mov %0,%%rdi" : "=m" (partner) );
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| 29 | asm( "mov %rdi,%rax" );
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| 30 | #ifndef OPT
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| 31 | #ifdef PRINT
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| 32 | asm( "add $40, %rsp" );
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| 33 | #endif // PRINT
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| 34 | asm( "popq %rbp" );
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| 35 | #endif // ! OPT
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| 36 |
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| 37 | #ifdef OPT
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| 38 | #ifdef PRINT
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| 39 | asm( "popq %rbx" );
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| 40 | #endif // PRINT
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| 41 | #endif // OPT
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| 42 | asm( "jmp _ZN8PingPongclEv" );
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| 43 | cycle: ;
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| 44 | printf( "Y %s %d\n", name, obj.i );
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| 45 | } // for
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| 46 | }
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| 47 | };
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| 48 | int main() {
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| 49 | enum { N =
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| 50 | #ifdef PRINT
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| 51 | 5
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| 52 | #else
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| 53 | 1000000000
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| 54 | #endif // PRINT
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| 55 | };
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| 56 | PingPong ping = { "ping", N }, pong = { "pong", N };
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| 57 | ping.partner = &pong; pong.partner = &ping;
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| 58 | ping();
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| 59 | }
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| 60 |
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| 61 | // Local Variables: //
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| 62 | // tab-width: 4 //
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| 63 | // compile-command: "g++-8 -g -DPRINT PingPong.cc" //
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| 64 | // End: //
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