diff options
Diffstat (limited to 'tapsets.cxx')
| -rw-r--r-- | tapsets.cxx | 34 |
1 files changed, 33 insertions, 1 deletions
diff --git a/tapsets.cxx b/tapsets.cxx index bc567491..e9ade595 100644 --- a/tapsets.cxx +++ b/tapsets.cxx @@ -18,6 +18,7 @@ #include "buildrun.h" #include "dwarf_wrappers.h" #include "auto_free.h" +#include "hash.h" #include <cstdlib> #include <algorithm> @@ -9993,12 +9994,43 @@ tracepoint_builder::init_dw(systemtap_session& s) if (dw != NULL) return true; + if (s.use_cache) + { + // see if the cached module exists + find_tracequery_hash(s); + if (!s.tracequery_path.empty()) + { + int fd = open(s.tracequery_path.c_str(), O_RDONLY); + if (fd != -1) + { + if (s.verbose > 2) + clog << "Pass 2: using cached " << s.tracequery_path << endl; + + dw = new dwflpp(s); + dw->setup_user(s.tracequery_path); + close(fd); + return true; + } + } + } + + // no cached module, time to make it string tracequery_ko; int rc = make_tracequery(s, tracequery_ko); if (rc != 0) return false; - // TODO cache tracequery.ko + if (s.use_cache) + { + // try to save tracequery in the cache + if (s.verbose > 2) + clog << "Copying " << tracequery_ko + << " to " << s.tracequery_path << endl; + if (copy_file(tracequery_ko.c_str(), + s.tracequery_path.c_str()) != 0) + cerr << "Copy failed (\"" << tracequery_ko << "\" to \"" + << s.tracequery_path << "\"): " << strerror(errno) << endl; + } dw = new dwflpp(s); dw->setup_user(tracequery_ko); |