Maybe you mean something like support for linux uprobes? There is some discussion here: https://github.com/golang/go/issues/22008 Google for "golang uprobes" picks up a couple of other links: http://www.brendangregg.com/blog/2017-01-31/golang-bcc-bpf-function-tracing.html https://kinvolk.io/blog/2017/09/an-update-on-gobpf---elf-loading-uprobes-more-program-types/
On Thu, 15 Nov 2018 at 19:22 robert engels <reng...@ix.netcom.com> wrote: > Pike’s “coverage" uses source code rewriting and recompiling, so it is not > dynamic instrumentation - at least how I would define it. Dynamic > instrumentation to me means to instrument at runtime on an existing > binary/distribution. > > > On Nov 15, 2018, at 12:55 PM, Michael Jones <michael.jo...@gmail.com> > wrote: > > You could study Rob Pike’s coverage/profiling tool to see how he adds and > exploits basic block counting. Good work as always. > > On Thu, Nov 15, 2018 at 9:34 AM Robert Engels <reng...@ix.netcom.com> > wrote: > >> AFAIK dtrace support is compiled in. If not enabled there are some tricks >> to make is essentially zero cost, but it is still there from the start. >> Could be wrong but that’s my understanding. >> >> Sent from my iPhone >> >> On Nov 15, 2018, at 11:27 AM, Steven Hartland <ste...@multiplay.co.uk> >> wrote: >> >> dtrace support? >> >> On 15/11/2018 16:51, ju...@sqreen.io wrote: >> >> Hi, >> >> I am working on dynamic instrumentation of Go programs at run time, >> possibly without static source-code instrumentation. As I would like a >> solution as close to Go and standard as possible, I was first thinking of >> using `go generate` to generate a file adding things `reflect` doesn't >> provide such as the list of packages, functions, global variables... That >> way, I should be able to use `reflect` to modify any dynamic calls by >> modifying the method tables of their underlying type representations. >> >> But regarding statically linked calls, the less intrusive technique I >> found are uprobes, which is linux-specific. And at the opposite, there are >> user-space binary code instrumentation libraries such as dyninst that >> modify the code at run time... >> >> So I am wondering if anyone here has any thoughts on this subject, that >> doesn't seem to be solved for Go programs. >> >> Thanks! >> >> Julio >> -- >> You received this message because you are subscribed to the Google Groups >> "golang-nuts" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to golang-nuts+unsubscr...@googlegroups.com. >> For more options, visit https://groups.google.com/d/optout. >> >> >> >> -- >> You received this message because you are subscribed to the Google Groups >> "golang-nuts" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to golang-nuts+unsubscr...@googlegroups.com. >> For more options, visit https://groups.google.com/d/optout. >> >> >> -- >> You received this message because you are subscribed to the Google Groups >> "golang-nuts" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to golang-nuts+unsubscr...@googlegroups.com. >> For more options, visit https://groups.google.com/d/optout. >> > -- > > *Michael T. jonesmichael.jo...@gmail.com <michael.jo...@gmail.com>* > > -- > You received this message because you are subscribed to the Google Groups > "golang-nuts" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to golang-nuts+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > > > -- > You received this message because you are subscribed to the Google Groups > "golang-nuts" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to golang-nuts+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
