diff options
| author | Josh Gao <jmgao@google.com> | 2017-08-21 14:31:17 -0700 |
|---|---|---|
| committer | Josh Gao <jmgao@google.com> | 2017-12-15 14:11:12 -0800 |
| commit | 2b2ae0c88ef83c4c53297ff54fa601b18c014fa4 (patch) | |
| tree | 832d3ab764da9a63d4e22001f18045fa13078dd5 /debuggerd/util.cpp | |
| parent | 385ea22741ed5bad794fb6b1dff2b46481f241c4 (diff) | |
crash_dump: fork a copy of the target's address space.
Reduce the amount of time that a process remains paused by pausing its
threads, fetching their registers, and then performing unwinding on a
copy of its address space. This also works around a kernel change
that's in 4.9 that prevents ptrace from reading memory of processes
that we don't have immediate permissions to ptrace (even if we
previously ptraced them).
Bug: http://b/62112103
Bug: http://b/63989615
Test: treehugger
Change-Id: I7b9cc5dd8f54a354bc61f1bda0d2b7a8a55733c4
Diffstat (limited to 'debuggerd/util.cpp')
| -rw-r--r-- | debuggerd/util.cpp | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/debuggerd/util.cpp b/debuggerd/util.cpp index 0bb07ac1b..50c5efc99 100644 --- a/debuggerd/util.cpp +++ b/debuggerd/util.cpp @@ -18,8 +18,12 @@ #include <sys/socket.h> +#include <string> #include <utility> +#include <android-base/file.h> +#include <android-base/stringprintf.h> +#include <android-base/strings.h> #include <android-base/unique_fd.h> #include <cutils/sockets.h> #include "protocol.h" @@ -86,3 +90,15 @@ ssize_t recv_fd(int sockfd, void* _Nonnull data, size_t len, unique_fd* _Nullabl return result; } + +std::string get_process_name(pid_t pid) { + std::string result = "<unknown>"; + android::base::ReadFileToString(android::base::StringPrintf("/proc/%d/cmdline", pid), &result); + return result; +} + +std::string get_thread_name(pid_t tid) { + std::string result = "<unknown>"; + android::base::ReadFileToString(android::base::StringPrintf("/proc/%d/comm", tid), &result); + return android::base::Trim(result); +} |