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profil — ?ץ??????Υץ??ե??????????椹??

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Standard C Library (libc, -lc)

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<unistd.h> int profil(char *samples, size_t size, vm_offset_t offset, int scale)

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profil() ?????ƥॳ?????ϡ????ߤΥץ??????Υ????󥿥ץ??ե???????ͭ?????ޤ??? ̵???????ޤ??? ?ץ??ե????뤬ͭ???ʾ??硢?ץ??ե????륯???å????å????Ȥˡ??????ͥ??? samples ?Хåե?????Ŭ?ڤʥ??????Ȥ򹹿????ޤ??? ?ץ??ե????륯???å??μ??ȿ??ϡ? ?ץ??ե????????ϥե????????Υإå????˵?Ͽ?????ޤ???

?Хåե? samples ?ˤ? size ?Х??Ȥ??ޤޤ??Ƥ??ꡢ??Ϣ?? 16 ?ӥåȤβ???ʬ?䤵???ޤ??? ?Ʋ??ϡ??ץ??ե????뤬ͭ?????˥ץ??ե????륯???å????å???ȯ???????Ȥ??ˡ? ?ץ??????५???󥿤??ץ????????????̤ʥ??ɥ쥹?ϰ????ˤ??ä??????? ???????Ȥ??ޤ??? ?????Υץ??????५???󥿥??ɥ쥹?ˤĤ??ơ??б????????ο??? ???δط??ˤ??ä?Ϳ???????ޤ???

[(pc - offset) / 2] * scale / 65536

offset ?????ϡ??????ͥ뤬?ץ??????५???󥿥????ץ??? ?????Ǥ??㤤???ɥ쥹?Ǥ??? scale ???????ϰϤ? 1 ???? 65536 ?Ǥ??ꡢ ???ι????????ѹ??????Τ˻??ѤǤ??ޤ??? ???????? 65536 ?ϡ??Ʋ??򥢥ɥ쥹?ϰϤ? 2 ?Х??Ȥ˳??????Ƥޤ??? ???????? 32768 ?? 4 ?Х??ȡ?16384 ?? 8 ?Х??ȡ?????Ʊ?ͤǤ??? ???֤??ͤϤ????褽???֤??ϰϤ?Ϳ???ޤ??? scale ?ͤ? 0 ?ξ??硢?ץ??ե???????̵???ˤʤ??ޤ???

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The profil() function returns the value 0 if successful; otherwise the value -1 is returned and the global variable errno is set to indicate the error.

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/usr/lib/gcrt0.o

?ץ??ե??????????Ѥ? C ???󥿥??ॹ?????ȥ??åץե?????

gmon.out

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???顼

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[EFAULT]

?Хåե? samples ??̵???ʥ??ɥ쥹?????äƤ??ޤ???

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gprof(1)

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profil() ?ؿ??? Version 7 AT&T UNIX ???о줷?ޤ?????

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???Υ롼??????̾???? profile() ?ˤ??٤??Ǥ???

samples ???????????ϥ٥??ȥ? unsigned short ?Υ٥??ȥ??Ǥ???ɬ?פ??????ޤ???

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