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// Check that we can turn a function id to a function address, and also get the
// maximum function id for the current binary.
//
// RUN: %clangxx_xray -std=c++11 %s -o %t
// RUN: XRAY_OPTIONS="patch_premain=false" %run %t
// RUN: %clangxx_xray -fno-xray-function-index -std=c++11 %s -o %t
// RUN: XRAY_OPTIONS="patch_premain=false" %run %t
// UNSUPPORTED: target-is-mips64,target-is-mips64el
#include "xray/xray_interface.h"
#include <algorithm>
#include <cassert>
#include <cstdio>
#include <iterator>
#include <set>
[[clang::xray_always_instrument]] void bar(){}
[[clang::xray_always_instrument]] void foo() {
bar();
}
[[clang::xray_always_instrument]] int main(int argc, char *argv[]) {
assert(__xray_max_function_id() != 0 && "we need xray instrumentation!");
std::set<void *> must_be_instrumented = {reinterpret_cast<void *>(&foo),
reinterpret_cast<void *>(&bar),
reinterpret_cast<void *>(&main)};
std::set<void *> all_instrumented;
for (auto i = __xray_max_function_id(); i != 0; --i) {
auto addr = __xray_function_address(i);
all_instrumented.insert(reinterpret_cast<void *>(addr));
}
assert(all_instrumented.size() == __xray_max_function_id() &&
"each function id must be assigned to a unique function");
std::set<void *> not_instrumented;
std::set_difference(
must_be_instrumented.begin(), must_be_instrumented.end(),
all_instrumented.begin(), all_instrumented.end(),
std::inserter(not_instrumented, not_instrumented.begin()));
assert(
not_instrumented.empty() &&
"we should see all explicitly instrumented functions with function ids");
return not_instrumented.empty() ? 0 : 1;
}
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