Signed-off-by: Daijiro Fukuda <fukuda@clear-code.com>

TODO

- add test-codes
- support winsvc
- consider about supporting rpc
- consider about supporting the next error which occurs without `/tmp` dir.
 (`Sigdump.dump` outputs to `/tmp/sigdump-{pid}.log` by default)

error: `failed to dump: No such file or directory @ rb_sysopen - /tmp/sigdump-{pid}.log`

Signed-off-by: Daijiro Fukuda <fukuda@clear-code.com>

Signed-off-by: Daijiro Fukuda <fukuda@clear-code.com>

Signed-off-by: Daijiro Fukuda <fukuda@clear-code.com>

Signed-off-by: Daijiro Fukuda <fukuda@clear-code.com>

Signed-off-by: Daijiro Fukuda <fukuda@clear-code.com>

A class definition in `test_in_object_space` was making Sigdump fail.
This is because `ObjectSpace.each_object` iterates all classes defined.
I have fixed this so that `FailObject.class` raises an error only in
`test_in_object_space`.

Signed-off-by: Daijiro Fukuda <fukuda@clear-code.com>

Signed-off-by: Daijiro Fukuda <fukuda@clear-code.com>

Signed-off-by: Daijiro Fukuda <fukuda@clear-code.com>

To "%windir%/Temp/fluentd-sigdump-#{Process.pid}.log" by default.

When 'SIGDUMP_PATH' environment variable is specified,
add pid to the extension of the path
in order to avoid a conflict of writing to the same file.

Made no modifications for UNIX-like for this commit.
As for UNIX-like, in order to add the same specification, 
need to add a trap of SIGCONT to the worker processes
or to fix the Sigdump library.
However, it loses backward compatibility for users using 'SIGDUMP_PATH'
environment variable, so need to consider what to do.

Signed-off-by: Daijiro Fukuda <fukuda@clear-code.com>

to describe its function well

Signed-off-by: Daijiro Fukuda <fukuda@clear-code.com>

Shouldn't change SIGCONT behavior on UNIX-like for backward compatibility.
The rpc dump command is a new function, so make it send SIGCONT to all fluentd
processes.

With `SIGDUMP_PATH` environment variable specified on UNIX-like,
the rpc dump command will cause a writing conflict.
This should be fixed by improving the Sigdump library so that we can
specify a directory path.

Signed-off-by: Daijiro Fukuda <fukuda@clear-code.com>

In order not to block the waiting thread.

Signed-off-by: Daijiro Fukuda <fukuda@clear-code.com>

This test works fine on its own, but some other tests make it fail.
Use mock to solve this problem.

Signed-off-by: Daijiro Fukuda <fukuda@clear-code.com>

There is no actual request from users, and it might introduce security risk.

Signed-off-by: Takuro Ashie <ashie@clear-code.com>