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-rw-r--r--indra/llcommon/llprocess.cpp118
-rw-r--r--indra/llcommon/llprocess.h18
-rw-r--r--indra/llcommon/tests/llprocess_test.cpp59
3 files changed, 151 insertions, 44 deletions
diff --git a/indra/llcommon/llprocess.cpp b/indra/llcommon/llprocess.cpp
index d6a5a18565..9799ed1938 100644
--- a/indra/llcommon/llprocess.cpp
+++ b/indra/llcommon/llprocess.cpp
@@ -125,7 +125,7 @@ const LLProcess::BasePipe::size_type
class WritePipeImpl: public LLProcess::WritePipe
{
- LOG_CLASS(WritePipeImpl);
+ LOG_CLASS(WritePipeImpl);
public:
WritePipeImpl(const std::string& desc, apr_file_t* pipe):
mDesc(desc),
@@ -202,7 +202,7 @@ private:
class ReadPipeImpl: public LLProcess::ReadPipe
{
- LOG_CLASS(ReadPipeImpl);
+ LOG_CLASS(ReadPipeImpl);
public:
ReadPipeImpl(const std::string& desc, apr_file_t* pipe):
mDesc(desc),
@@ -394,6 +394,23 @@ LLProcessPtr LLProcess::create(const LLSDOrParams& params)
catch (const LLProcessError& e)
{
LL_WARNS("LLProcess") << e.what() << LL_ENDL;
+
+ // If caller is requesting an event on process termination, send one
+ // indicating bad launch. This may prevent someone waiting forever for
+ // a termination post that can't arrive because the child never
+ // started.
+ if (! std::string(params.postend).empty())
+ {
+ LLEventPumps::instance().obtain(params.postend)
+ .post(LLSDMap
+ // no "id"
+ ("desc", std::string(params.executable))
+ ("state", LLProcess::UNSTARTED)
+ // no "data"
+ ("string", e.what())
+ );
+ }
+
return LLProcessPtr();
}
}
@@ -425,6 +442,8 @@ LLProcess::LLProcess(const LLSDOrParams& params):
<< LLSDNotationStreamer(params)));
}
+ mPostend = params.postend;
+
apr_procattr_t *procattr = NULL;
chkapr(apr_procattr_create(&procattr, gAPRPoolp));
@@ -744,6 +763,19 @@ void LLProcess::handle_status(int reason, int status)
// hand.
mStatus = interpret_status(status);
LL_INFOS("LLProcess") << getStatusString() << LL_ENDL;
+
+ // If caller requested notification on child termination, send it.
+ if (! mPostend.empty())
+ {
+ LLEventPumps::instance().obtain(mPostend)
+ .post(LLSDMap
+ ("id", getProcessID())
+ ("desc", mDesc)
+ ("state", mStatus.mState)
+ ("data", mStatus.mData)
+ ("string", getStatusString())
+ );
+ }
}
LLProcess::id LLProcess::getProcessID() const
@@ -769,72 +801,72 @@ std::string LLProcess::getPipeName(FILESLOT)
template<class PIPETYPE>
PIPETYPE* LLProcess::getPipePtr(std::string& error, FILESLOT slot)
{
- if (slot >= NSLOTS)
- {
- error = STRINGIZE(mDesc << " has no slot " << slot);
- return NULL;
- }
- if (mPipes.is_null(slot))
- {
- error = STRINGIZE(mDesc << ' ' << whichfile[slot] << " not a monitored pipe");
- return NULL;
- }
- // Make sure we dynamic_cast in pointer domain so we can test, rather than
- // accepting runtime's exception.
- PIPETYPE* ppipe = dynamic_cast<PIPETYPE*>(&mPipes[slot]);
- if (! ppipe)
- {
- error = STRINGIZE(mDesc << ' ' << whichfile[slot] << " not a " << typeid(PIPETYPE).name());
- return NULL;
- }
-
- error.clear();
- return ppipe;
+ if (slot >= NSLOTS)
+ {
+ error = STRINGIZE(mDesc << " has no slot " << slot);
+ return NULL;
+ }
+ if (mPipes.is_null(slot))
+ {
+ error = STRINGIZE(mDesc << ' ' << whichfile[slot] << " not a monitored pipe");
+ return NULL;
+ }
+ // Make sure we dynamic_cast in pointer domain so we can test, rather than
+ // accepting runtime's exception.
+ PIPETYPE* ppipe = dynamic_cast<PIPETYPE*>(&mPipes[slot]);
+ if (! ppipe)
+ {
+ error = STRINGIZE(mDesc << ' ' << whichfile[slot] << " not a " << typeid(PIPETYPE).name());
+ return NULL;
+ }
+
+ error.clear();
+ return ppipe;
}
template <class PIPETYPE>
PIPETYPE& LLProcess::getPipe(FILESLOT slot)
{
- std::string error;
- PIPETYPE* wp = getPipePtr<PIPETYPE>(error, slot);
- if (! wp)
- {
- throw NoPipe(error);
- }
- return *wp;
+ std::string error;
+ PIPETYPE* wp = getPipePtr<PIPETYPE>(error, slot);
+ if (! wp)
+ {
+ throw NoPipe(error);
+ }
+ return *wp;
}
template <class PIPETYPE>
boost::optional<PIPETYPE&> LLProcess::getOptPipe(FILESLOT slot)
{
- std::string error;
- PIPETYPE* wp = getPipePtr<PIPETYPE>(error, slot);
- if (! wp)
- {
- LL_DEBUGS("LLProcess") << error << LL_ENDL;
- return boost::optional<PIPETYPE&>();
- }
- return *wp;
+ std::string error;
+ PIPETYPE* wp = getPipePtr<PIPETYPE>(error, slot);
+ if (! wp)
+ {
+ LL_DEBUGS("LLProcess") << error << LL_ENDL;
+ return boost::optional<PIPETYPE&>();
+ }
+ return *wp;
}
LLProcess::WritePipe& LLProcess::getWritePipe(FILESLOT slot)
{
- return getPipe<WritePipe>(slot);
+ return getPipe<WritePipe>(slot);
}
boost::optional<LLProcess::WritePipe&> LLProcess::getOptWritePipe(FILESLOT slot)
{
- return getOptPipe<WritePipe>(slot);
+ return getOptPipe<WritePipe>(slot);
}
LLProcess::ReadPipe& LLProcess::getReadPipe(FILESLOT slot)
{
- return getPipe<ReadPipe>(slot);
+ return getPipe<ReadPipe>(slot);
}
boost::optional<LLProcess::ReadPipe&> LLProcess::getOptReadPipe(FILESLOT slot)
{
- return getOptPipe<ReadPipe>(slot);
+ return getOptPipe<ReadPipe>(slot);
}
std::ostream& operator<<(std::ostream& out, const LLProcess::Params& params)
@@ -932,7 +964,7 @@ static std::string WindowsErrorString(const std::string& operation)
NULL)
!= 0)
{
- // convert from wide-char string to multi-byte string
+ // convert from wide-char string to multi-byte string
char message[256];
wcstombs(message, error_str, sizeof(message));
message[sizeof(message)-1] = 0;
diff --git a/indra/llcommon/llprocess.h b/indra/llcommon/llprocess.h
index 06be0954c0..96a3dce5b3 100644
--- a/indra/llcommon/llprocess.h
+++ b/indra/llcommon/llprocess.h
@@ -158,7 +158,8 @@ public:
args("args"),
cwd("cwd"),
autokill("autokill", true),
- files("files")
+ files("files"),
+ postend("postend")
{}
/// pathname of executable
@@ -184,6 +185,20 @@ public:
* underlying implementation library doesn't support that.
*/
Multiple<FileParam> files;
+ /**
+ * On child-process termination, if this LLProcess object still
+ * exists, post LLSD event to LLEventPump with specified name (default
+ * no event). Event contains at least:
+ *
+ * - "id" as obtained from getProcessID()
+ * - "desc" short string description of child (executable + pid)
+ * - "state" @c state enum value, from Status.mState
+ * - "data" if "state" is EXITED, exit code; if KILLED, on Posix,
+ * signal number
+ * - "string" English text describing "state" and "data" (e.g. "exited
+ * with code 0")
+ */
+ Optional<std::string> postend;
};
typedef LLSDParamAdapter<Params> LLSDOrParams;
@@ -462,6 +477,7 @@ private:
PIPETYPE* getPipePtr(std::string& error, FILESLOT slot);
std::string mDesc;
+ std::string mPostend;
apr_proc_t mProcess;
bool mAutokill;
Status mStatus;
diff --git a/indra/llcommon/tests/llprocess_test.cpp b/indra/llcommon/tests/llprocess_test.cpp
index c67605cc0b..1a755c283c 100644
--- a/indra/llcommon/tests/llprocess_test.cpp
+++ b/indra/llcommon/tests/llprocess_test.cpp
@@ -1206,6 +1206,65 @@ namespace tut
ensure("find(\"ghi\", 27)", childout.find("ghi", 27) == LLProcess::ReadPipe::npos);
}
+ template<> template<>
+ void object::test<20>()
+ {
+ set_test_name("good postend");
+ PythonProcessLauncher py("postend",
+ "import sys\n"
+ "sys.exit(35)\n");
+ std::string pumpname("postend");
+ EventListener listener(LLEventPumps::instance().obtain(pumpname));
+ py.mParams.postend = pumpname;
+ py.launch();
+ LLProcess::id childid(py.mPy->getProcessID());
+ // Don't use waitfor(), which calls isRunning(); instead wait for an
+ // event on pumpname.
+ int i, timeout = 60;
+ for (i = 0; i < timeout && listener.mHistory.empty(); ++i)
+ {
+ yield();
+ }
+ ensure("no postend event", i < timeout);
+ ensure_equals("number of postend events", listener.mHistory.size(), 1);
+ LLSD postend(listener.mHistory.front());
+ ensure_equals("id", postend["id"].asInteger(), childid);
+ ensure("desc empty", ! postend["desc"].asString().empty());
+ ensure_equals("state", postend["state"].asInteger(), LLProcess::EXITED);
+ ensure_equals("data", postend["data"].asInteger(), 35);
+ std::string str(postend["string"]);
+ ensure_contains("string", str, "exited");
+ ensure_contains("string", str, "35");
+ }
+
+ template<> template<>
+ void object::test<21>()
+ {
+ set_test_name("bad postend");
+ std::string pumpname("postend");
+ EventListener listener(LLEventPumps::instance().obtain(pumpname));
+ LLProcess::Params params;
+ params.postend = pumpname;
+ LLProcessPtr child = LLProcess::create(params);
+ ensure("shouldn't have launched", ! child);
+ ensure_equals("number of postend events", listener.mHistory.size(), 1);
+ LLSD postend(listener.mHistory.front());
+ ensure("has id", ! postend.has("id"));
+ // Ha ha, in this case the implementation normally sets "desc" to
+ // params.executable. But as the nature of the problem is that
+ // params.executable is empty, expecting "desc" to be nonempty is a
+ // bit unreasonable!
+ //ensure("desc empty", ! postend["desc"].asString().empty());
+ ensure_equals("state", postend["state"].asInteger(), LLProcess::UNSTARTED);
+ ensure("has data", ! postend.has("data"));
+ std::string error(postend["string"]);
+ // All we get from canned parameter validation is a bool, so the
+ // "validation failed" message we ourselves generate can't mention
+ // "executable" by name. Just check that it's nonempty.
+ //ensure_contains("error", error, "executable");
+ ensure("string", ! error.empty());
+ }
+
// TODO:
// test EOF -- check logging
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-31 08:22:39 +0000