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author | Frank Ch. Eigler <fche@elastic.org> | 2009-08-18 12:26:26 -0400 |
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committer | Frank Ch. Eigler <fche@elastic.org> | 2009-08-18 12:26:26 -0400 |
commit | 18e5ffd4405633ea2cef102d01890dfbb159b363 (patch) | |
tree | 105ac469c6f02a8fdb23a982fd4b1850793bbaf2 /translate.cxx | |
parent | 412e1bf7de63114d4432382a08eb21f1301a241c (diff) | |
download | systemtap-steved-18e5ffd4405633ea2cef102d01890dfbb159b363.tar.gz systemtap-steved-18e5ffd4405633ea2cef102d01890dfbb159b363.tar.xz systemtap-steved-18e5ffd4405633ea2cef102d01890dfbb159b363.zip |
PR10516: reduce context size
* translate.cxx (emit_common_header): Emit probe locals into
a separate union, not into the locals[] array.
(emit_probe): Adapt.
Diffstat (limited to 'translate.cxx')
-rw-r--r-- | translate.cxx | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/translate.cxx b/translate.cxx index 8d20e8f6..2e2716e2 100644 --- a/translate.cxx +++ b/translate.cxx @@ -897,6 +897,9 @@ c_unparser::emit_common_header () o->newline() << "cycles_t cycles_base;"; o->newline() << "cycles_t cycles_sum;"; o->newline() << "#endif"; + + + // PR10516: probe locals o->newline() << "union {"; o->indent(1); @@ -927,8 +930,6 @@ c_unparser::emit_common_header () { tmp_probe_contents[oss.str()] = dp->name; // save it - // XXX: probe locals need not be recursion-nested, only function locals - o->newline() << "struct " << dp->name << "_locals {"; o->indent(1); for (unsigned j=0; j<dp->locals.size(); j++) @@ -954,6 +955,11 @@ c_unparser::emit_common_header () o->newline(-1) << "} " << dp->name << ";"; } } + o->newline(-1) << "} probe_locals;"; + + // PR10516: function locals + o->newline() << "union {"; + o->indent(1); for (map<string,functiondecl*>::iterator it = session->functions.begin(); it != session->functions.end(); it++) { @@ -1603,7 +1609,7 @@ c_unparser::emit_probe (derived_probe* v) // initialize frame pointer o->newline() << "struct " << v->name << "_locals * __restrict__ l ="; - o->newline(1) << "& c->locals[0]." << v->name << ";"; + o->newline(1) << "& c->probe_locals." << v->name << ";"; o->newline(-1) << "(void) l;"; // make sure "l" is marked used o->newline() << "#ifdef STP_TIMING"; |