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| author | fche <fche> | 2005-09-07 02:16:59 +0000 |
|---|---|---|
| committer | fche <fche> | 2005-09-07 02:16:59 +0000 |
| commit | ff17e83089dee8d23e51cf55f8ea3a28c07dedee (patch) | |
| tree | afd37ba5838c793f80f83f550dd91148474c435a | |
| parent | 5d64f5e78eab3b1eeccca5c91aa50f8414c1e878 (diff) | |
| download | systemtap-steved-ff17e83089dee8d23e51cf55f8ea3a28c07dedee.tar.gz systemtap-steved-ff17e83089dee8d23e51cf55f8ea3a28c07dedee.tar.xz systemtap-steved-ff17e83089dee8d23e51cf55f8ea3a28c07dedee.zip | |
2005-09-06 Frank Ch. Eigler <fche@elastic.org>
* stap.1.in: Clarify absence of short-circuiting in && and ||.
* translate.cxx (emit_function): Improve "array locals" message.
* tapset/timestamp.stp: Add gettimeofday_us function. Correct
arithmetic typing in other functions.
* stapfuncs.5.in: Document new function.
| -rw-r--r-- | ChangeLog | 8 | ||||
| -rw-r--r-- | stap.1.in | 4 | ||||
| -rw-r--r-- | stapfuncs.5.in | 4 | ||||
| -rw-r--r-- | tapset/timestamp.stp | 10 | ||||
| -rw-r--r-- | translate.cxx | 2 |
5 files changed, 25 insertions, 3 deletions
@@ -1,3 +1,11 @@ +2005-09-06 Frank Ch. Eigler <fche@elastic.org> + + * stap.1.in: Clarify absence of short-circuiting in && and ||. + * translate.cxx (emit_function): Improve "array locals" message. + * tapset/timestamp.stp: Add gettimeofday_us function. Correct + arithmetic typing in other functions. + * stapfuncs.5.in: Document new function. + 2005-09-06 Martin Hunt <hunt@redhat.com> * systemtap.spec.in: Bump elfutils_version to .115. @@ -219,7 +219,9 @@ Return now from enclosing probe handler. .SS EXPRESSIONS Systemtap supports a number of operators that have the same general syntax, semantics, and precedence as in C and awk. Arithmetic is performed as per -C rules. Division by zero is detected and results in an error. +typical C rules for signed integers. No short-circuiting is performed +for the boolean operations. Division by zero is detected and results in +an error. .TP binary numeric operators .B * / % + - >> << & ^ | && || diff --git a/stapfuncs.5.in b/stapfuncs.5.in index 77514e28..f883a8ad 100644 --- a/stapfuncs.5.in +++ b/stapfuncs.5.in @@ -87,6 +87,10 @@ address is only partial at present. .SS TIMESTAMP .TP +gettimeofday_us:long () +Return the number of microseconds since the UNIX epoch. + +.TP gettimeofday_ms:long () Return the number of milliseconds since the UNIX epoch. diff --git a/tapset/timestamp.stp b/tapset/timestamp.stp index b71841d4..8b8aa3f2 100644 --- a/tapset/timestamp.stp +++ b/tapset/timestamp.stp @@ -2,11 +2,19 @@ #include <linux/time.h> %} + +// return in microseconds since epoch +function gettimeofday_us:long () %{ + struct timeval tm; + do_gettimeofday (& tm); + THIS->__retvalue = (tm.tv_sec * 1000000ULL) + (tm.tv_usec); +%} + // return in milliseconds since epoch function gettimeofday_ms:long () %{ struct timeval tm; do_gettimeofday (& tm); - THIS->__retvalue = (tm.tv_sec * 1000) + (tm.tv_usec / 1000); + THIS->__retvalue = (tm.tv_sec * 1000ULL) + (tm.tv_usec / 1000); %} // return in seconds since epoch diff --git a/translate.cxx b/translate.cxx index cca6cad6..6b00cd9e 100644 --- a/translate.cxx +++ b/translate.cxx @@ -849,7 +849,7 @@ c_unparser::emit_function (functiondecl* v) for (unsigned i=0; i<v->locals.size(); i++) { if (v->locals[i]->index_types.size() > 0) // array? - throw semantic_error ("array locals not supported", v->tok); + throw semantic_error ("array locals not supported", v->locals[i]->tok); o->newline() << getvar (v->locals[i]).init(); } |