GNU/Linux man pages
Livre :
Expressions régulières,
Syntaxe et mise en oeuvre :
Unix |
Unix v6 |
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profil(2) |
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profil execution time profile (profil = 44.; not in assembler)
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sys |
profil; buff; bufsiz; offset; scale profil(buff, bufsiz, offset, scale) |
char buff[ ];
int bufsiz, offset, scale; points to an area of core
whose length (in bytes) is given by After this call, the
user’s program counter (pc) is examined each clock
tick (60th second); is subtracted from it, and the result
multiplied by If the resulting number corresponds to a word
inside that word is incremented. The scale is interpreted as
an unsigned, fixed-point fraction with binary point at the
left: 177777(8) gives a 1-1 mapping of pc’s to words
in 77777(8) maps each pair of instruction words together.
2(8) maps all instructions onto the beginning of (producing
a non-interrupting core clock). Profiling is turned off by
giving a of 0 or 1. It is rendered ineffective by giving a
of 0. Profiling is also turned off when an is executed but
remains on in child and parent both after a monitor (III),
prof (I)
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profil(2) | |