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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

39
src/common/module.h
View file

@ -38,6 +38,7 @@
#ifndef COMMON_LINUX_MODULE_H__
#define COMMON_LINUX_MODULE_H__
#include <functional>
#include <iostream>
#include <limits>
#include <map>
@ -131,7 +132,7 @@ class Module {
};
struct InlineOrigin {
explicit InlineOrigin(StringView name): id(-1), name(name), file(nullptr) {}
explicit InlineOrigin(StringView name) : id(-1), name(name) {}
// A unique id for each InlineOrigin object. INLINE records use the id to
// refer to its INLINE_ORIGIN record.
@ -139,10 +140,6 @@ class Module {
// The inlined function's name.
StringView name;
File* file;
int getFileID() const { return file ? file->source_id : -1; }
};
// A inlined call site.
@ -150,11 +147,14 @@ class Module {
Inline(InlineOrigin* origin,
const vector<Range>& ranges,
int call_site_line,
int call_site_file_id,
int inline_nest_level,
vector<std::unique_ptr<Inline>> child_inlines)
: origin(origin),
ranges(ranges),
call_site_line(call_site_line),
call_site_file_id(call_site_file_id),
call_site_file(nullptr),
inline_nest_level(inline_nest_level),
child_inlines(std::move(child_inlines)) {}
@ -165,10 +165,29 @@ class Module {
int call_site_line;
// The id is only meanful inside a CU. It's only used for looking up real
// File* after scanning a CU.
int call_site_file_id;
File* call_site_file;
int inline_nest_level;
// A list of inlines which are children of this inline.
vector<std::unique_ptr<Inline>> child_inlines;
int getCallSiteFileID() const {
return call_site_file ? call_site_file->source_id : -1;
}
static void InlineDFS(
vector<std::unique_ptr<Module::Inline>>& inlines,
std::function<void(std::unique_ptr<Module::Inline>&)> const& forEach) {
for (std::unique_ptr<Module::Inline>& in : inlines) {
forEach(in);
InlineDFS(in->child_inlines, forEach);
}
}
};
typedef map<uint64_t, InlineOrigin*> InlineOriginByOffset;
@ -182,9 +201,7 @@ class Module {
// value of its DW_AT_specification or equals to offset if
// DW_AT_specification doesn't exist in that DIE.
void SetReference(uint64_t offset, uint64_t specification_offset);
void AssignFilesToInlineOrigins(
const vector<uint64_t>& inline_origin_offsets,
File* file);
~InlineOriginMap() {
for (const auto& iter : inline_origins_) {
delete iter.second;
@ -261,10 +278,8 @@ class Module {
};
struct InlineOriginCompare {
bool operator() (const InlineOrigin* lhs, const InlineOrigin* rhs) const {
if (lhs->getFileID() == rhs->getFileID())
return lhs->name < rhs->name;
return lhs->getFileID() < rhs->getFileID();
bool operator()(const InlineOrigin* lhs, const InlineOrigin* rhs) const {
return lhs->name < rhs->name;
}
};