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#! /usr/bin/env stap
global socketstart, lastevent, sendtofd
global eventnumber, eventname, eventstart, eventend, eventbytes, eventlength
global writestart, readstart, sendstart, recvstart
probe begin {
if (target() == 0) {
println("No PID specified. Use -c or -x. See man stap for more information.")
exit()
}
}
function printshorthistory (fd:long) {
if (eventnumber[fd] < 1 || eventnumber[fd] % 2 && eventnumber[fd] != 1)
return
wait1 = eventstart[fd, eventnumber[fd] - 1] - eventend[fd, eventnumber[fd] - 2]
wait2 = eventstart[fd, eventnumber[fd]] - eventend[fd, eventnumber[fd] - 1]
name1 = eventname[fd, eventnumber[fd] - 1]
name2 = eventname[fd, eventnumber[fd]]
length1 = eventlength[fd, eventnumber[fd] - 1]
length2 = eventlength[fd, eventnumber[fd]]
bytes1 = eventbytes[fd, eventnumber[fd] -1]
bytes2 = eventbytes[fd, eventnumber[fd]]
if (eventnumber[fd] == 1)
printf("Socket %d connect, wait %d us, %s %d bytes in %d us\n", fd, wait2, name2, bytes2, length2)
else {
printf("Socket %d wait %d us, ", fd, wait1)
printf("%s %d bytes in %d us, wait %d us, ", name1, bytes1, length1, wait2)
printf("%s %d bytes in %d us\n", name2, bytes2, length2)
}
}
probe syscall.socket.return {
if (!target_set_pid(pid()))
next
eventnumber[retval] = 0
socketstart[retval] = gettimeofday_us()
eventname[retval, eventnumber[retval]] = "connect"
eventend[retval, eventnumber[retval]] = gettimeofday_us()
lastevent[retval] = "connect"
}
probe syscall.close {
@this1 = fd
}
probe syscall.close.return {
if (!target_set_pid(pid()))
next
fd = @this1
if (socketstart[fd] != 0 && eventnumber[fd] >= 1)
printf("Socket %d close\n", fd)
delete socketstart[fd]
}
probe syscall.send, syscall.sendmsg {
if (!target_set_pid(pid()))
next
if (socketstart[s] != 0 && sendstart[s] == 0) {
sendstart[s] = gettimeofday_us()
if (lastevent[s] == "send")
next
printshorthistory(s)
eventname[s, ++eventnumber[s]] = "send"
eventstart[s, eventnumber[s]] = sendstart[s]
}
@this2 = s
}
probe syscall.sendto {
if (!target_set_pid(pid()))
next
if (socketstart[s] !=0 && sendstart[s] == 0) {
sendstart[s] = gettimeofday_us()
sendtofd[tid()] = s
if (lastevent[s] == "send")
next
printshorthistory(s)
eventname[s, ++eventnumber[s]] = "send"
eventstart[s, eventnumber[s]] = sendstart[s]
}
}
probe syscall.send.return, syscall.sendmsg.return {
if (!target_set_pid(pid()))
next
fd = @this2
if (socketstart[fd] != 0 && retval > 0) {
eventbytes[fd, eventnumber[fd]] += retval
eventlength[fd, eventnumber[fd]] += gettimeofday_us() - sendstart[fd]
eventend[fd, eventnumber[fd]] = gettimeofday_us()
}
sendstart[fd] = 0
lastevent[fd] = "send"
}
probe syscall.sendto.return {
if (!target_set_pid(pid()))
next
fd = sendtofd[tid()]
if (socketstart[fd] != 0 && retval > 0) {
eventbytes[fd, eventnumber[fd]] += retval
eventlength[fd, eventnumber[fd]] += gettimeofday_us() - sendstart[fd]
eventend[fd, eventnumber[fd]] = gettimeofday_us()
}
sendstart[fd] = 0
lastevent[fd] = "send"
}
probe syscall.recv, syscall.recvfrom, syscall.recvmsg {
if (!target_set_pid(pid()))
next
if (socketstart[s] != 0 && recvstart[s] == 0) {
recvstart[s] = gettimeofday_us()
if (lastevent[s] == "recv")
next
printshorthistory(s)
eventname[s, ++eventnumber[s]] = "recv"
eventstart[s, eventnumber[s]] = recvstart[s]
}
@this3 = s
}
probe syscall.recv.return, syscall.recvfrom.return, syscall.recvmsg.return {
if (!target_set_pid(pid()))
next
fd = @this3
if (socketstart[fd] != 0 && retval > 0) {
eventbytes[fd, eventnumber[fd]] += retval
eventlength[fd, eventnumber[fd]] += gettimeofday_us() - recvstart[fd]
eventend[fd, eventnumber[fd]] = gettimeofday_us()
}
recvstart[fd] = 0
lastevent[fd] = "recv"
}
probe syscall.write, syscall.writev {
if (!target_set_pid(pid()))
next
if (socketstart[fd] != 0 && writestart[fd] == 0) {
writestart[fd] = gettimeofday_us()
if (lastevent[fd] == "write")
next
printshorthistory(fd)
eventname[fd, ++eventnumber[fd]] = "write"
eventstart[fd, eventnumber[fd]] = writestart[fd]
}
@this4 = fd
}
probe syscall.write.return, syscall.writev.return {
if (!target_set_pid(pid()))
next
fd = @this4
if (socketstart[fd] != 0 && retval > 0) {
eventbytes[fd, eventnumber[fd]] += retval
eventlength[fd, eventnumber[fd]] += gettimeofday_us() - writestart[fd]
eventend[fd, eventnumber[fd]] = gettimeofday_us()
}
writestart[fd] = 0
lastevent[fd] = "write"
}
probe syscall.read, syscall.readv {
if (!target_set_pid(pid()))
next
if (socketstart[fd] != 0 && readstart[fd] == 0) {
readstart[fd] = gettimeofday_us()
if (lastevent[fd] == "read")
next
printshorthistory(fd)
eventname[fd, ++eventnumber[fd]] = "read"
eventstart[fd, eventnumber[fd]] = readstart[fd]
}
@this5 = fd
}
probe syscall.read.return, syscall.readv.return {
if (!target_set_pid(pid()))
next
fd = @this5
if (socketstart[fd] != 0 && retval > 0) {
eventbytes[fd, eventnumber[fd]] += retval
eventlength[fd, eventnumber[fd]] += gettimeofday_us() - readstart[fd]
eventend[fd, eventnumber[fd]] = gettimeofday_us()
}
readstart[fd] = 0
lastevent[fd] = "read"
}
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