Last change
on this file since ba068c0 was
7bef8cf,
checked in by Peter A. Buhr <pabuhr@…>, 16 months ago
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start paper on llheap
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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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[7bef8cf] | 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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