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Fix incorrect source file name for inlined frames

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Processor shows incorrect source file name if a frame have an inlined
frame and their source files are different.
Consider this example:
FILE 0 /tmp/a.h
FILE 1 /tmp/a.cpp
INLINE_ORIGIN 0 0 foo()
FUNC 1110 a 0 main
INLINE 0 22 0 1110 7
1110 7 3 0
1117 3 23 1

When querying the address 0x1110, we know this line 0x1110 corresponds
to /tmp/a.h line 3 and it's inside a inlined function foo() which is
defined at /tmp/a.h and called at line 22. But we don't know at which
file it's being called at line 22. So, we will get stacks like this:
void foo() /tmp/a.h:3
int main() /tmp/a.h:22

The correct stacks should be this:
void foo() /tmp/a.h:3
int main() /tmp/a.cpp:22

In this change:
1. Remove file_id field for INLINE_ORIGIN record.
2. Add call_site_file_id for INLINE record to represents the file where
this call being inlined.

After adding call_site_file_id to it (as third field), it looks like
this:
FILE 0 /tmp/a.h
FILE 1 /tmp/a.cpp
INLINE_ORIGIN 0 foo()
FUNC 1110 a 0 main
INLINE 0 22 1 0 1110 7
1110 7 3 0
1117 3 23 1

Bug: 1190878
Change-Id: Ibbb697d2f7e1b6ac3208cac6fae4353c8743198d
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/3232838
Reviewed-by: Joshua Peraza <jperaza@chromium.org>
This commit is contained in:
Zequan Wu 2021-10-20 14:07:55 -07:00 • committed by Joshua Peraza
parent 71387fc200
commit 54d878abcb
18 changed files with 223 additions and 214 deletions
Download patch file Download diff file Expand all files Collapse all files

42
src/common/module.cc
View file

@ -97,17 +97,6 @@ void Module::InlineOriginMap::SetReference(uint64_t offset,
references_[offset] = specification_offset;
}
void Module::InlineOriginMap::AssignFilesToInlineOrigins(
const vector<uint64_t>& inline_origin_offsets,
Module::File* file) {
for (uint64_t offset : inline_origin_offsets)
if (references_.find(offset) != references_.end()) {
auto origin = inline_origins_.find(references_[offset]);
if (origin != inline_origins_.end())
origin->second->file = file;
}
}
Module::Module(const string& name, const string& os,
const string& architecture, const string& id,
const string& code_id /* = "" */) :
@ -276,13 +265,18 @@ void Module::AssignSourceIds(
line_it != func->lines.end(); ++line_it)
line_it->file->source_id = 0;
}
// Also mark all files cited by inline functions by setting each one's source
// Also mark all files cited by inline callsite by setting each one's source
// id to zero.
for (InlineOrigin* origin : inline_origins)
auto markInlineFiles = [](unique_ptr<Inline>& in) {
// There are some artificial inline functions which don't belong to
// any file. Those will have file id -1.
if (origin->file)
origin->file->source_id = 0;
if (in->call_site_file)
in->call_site_file->source_id = 0;
};
for (auto func : functions_) {
Inline::InlineDFS(func->inlines, markInlineFiles);
}
// Finally, assign source ids to those files that have been marked.
// We could have just assigned source id numbers while traversing
@ -296,15 +290,6 @@ void Module::AssignSourceIds(
}
}
static void InlineDFS(
vector<unique_ptr<Module::Inline>>& inlines,
std::function<void(unique_ptr<Module::Inline>&)> const& forEach) {
for (unique_ptr<Module::Inline>& in : inlines) {
forEach(in);
InlineDFS(in->child_inlines, forEach);
}
}
void Module::CreateInlineOrigins(
set<InlineOrigin*, InlineOriginCompare>& inline_origins) {
// Only add origins that have file and deduplicate origins with same name and
@ -317,7 +302,7 @@ void Module::CreateInlineOrigins(
in->origin = *it;
};
for (Function* func : functions_)
InlineDFS(func->inlines, addInlineOrigins);
Module::Inline::InlineDFS(func->inlines, addInlineOrigins);
int next_id = 0;
for (InlineOrigin* origin : inline_origins) {
origin->id = next_id++;
@ -381,8 +366,7 @@ bool Module::Write(std::ostream& stream, SymbolData symbol_data) {
}
// Write out inline origins.
for (InlineOrigin* origin : inline_origins) {
stream << "INLINE_ORIGIN " << origin->id << " " << origin->getFileID()
<< " " << origin->name << "\n";
stream << "INLINE_ORIGIN " << origin->id << " " << origin->name << "\n";
if (!stream.good())
return ReportError();
}
@ -407,12 +391,12 @@ bool Module::Write(std::ostream& stream, SymbolData symbol_data) {
auto write_inline = [&](unique_ptr<Inline>& in) {
stream << "INLINE ";
stream << in->inline_nest_level << " " << in->call_site_line << " "
<< in->origin->id << hex;
<< in->getCallSiteFileID() << " " << in->origin->id << hex;
for (const Range& r : in->ranges)
stream << " " << (r.address - load_address_) << " " << r.size;
stream << dec << "\n";
};
InlineDFS(func->inlines, write_inline);
Module::Inline::InlineDFS(func->inlines, write_inline);
if (!stream.good())
return ReportError();