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Make intr optional for adb commands 

All adb commands are executed with an "interruptor", so that they can be
interrupted on Ctrl+C.

Make this interruptor optional, so that we could call "adb kill-server"
in OTG mode. This command always returns almost immediately anyway.

Ideally, we should make all blocking calls interruptible (including
libusb calls, by using the asynchronous API), but it's a lot of work,
and in practice it works well enough.

PR #3011 <https://github.com/Genymobile/scrcpy/pull/3011>
This commit is contained in:
Romain Vimont 2022-02-10 08:05:54 +01:00
parent 6ee75c0cff
commit 3bb24b3926
2 changed files with 14 additions and 6 deletions
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6
app/src/adb/adb.c
View File

@ -150,7 +150,7 @@ process_check_success_internal(sc_pid pid, const char *name, bool close,
static bool
process_check_success_intr(struct sc_intr *intr, sc_pid pid, const char *name,
unsigned flags) {
if (!sc_intr_set_process(intr, pid)) {
if (intr && !sc_intr_set_process(intr, pid)) {
// Already interrupted
return false;
}
@ -158,7 +158,9 @@ process_check_success_intr(struct sc_intr *intr, sc_pid pid, const char *name,
// Always pass close=false, interrupting would be racy otherwise
bool ret = process_check_success_internal(pid, name, false, flags);
sc_intr_set_process(intr, SC_PROCESS_NONE);
if (intr) {
sc_intr_set_process(intr, SC_PROCESS_NONE);
}
// Close separately
sc_process_close(pid);

14
app/src/util/process_intr.c
View File

@ -3,27 +3,33 @@
ssize_t
sc_pipe_read_intr(struct sc_intr *intr, sc_pid pid, sc_pipe pipe, char *data,
size_t len) {
if (!sc_intr_set_process(intr, pid)) {
if (intr && !sc_intr_set_process(intr, pid)) {
// Already interrupted
return false;
}
ssize_t ret = sc_pipe_read(pipe, data, len);
sc_intr_set_process(intr, SC_PROCESS_NONE);
if (intr) {
sc_intr_set_process(intr, SC_PROCESS_NONE);
}
return ret;
}
ssize_t
sc_pipe_read_all_intr(struct sc_intr *intr, sc_pid pid, sc_pipe pipe,
char *data, size_t len) {
if (!sc_intr_set_process(intr, pid)) {
if (intr && !sc_intr_set_process(intr, pid)) {
// Already interrupted
return false;
}
ssize_t ret = sc_pipe_read_all(pipe, data, len);
sc_intr_set_process(intr, SC_PROCESS_NONE);
if (intr) {
sc_intr_set_process(intr, SC_PROCESS_NONE);
}
return ret;
}