QNX RTOS v4 Knowledge Base
QNX RTOS v4 Knowledge Base
| Title |
Using PHINSTANCE environment variable |
| Ref. No. |
QNX.000009928 |
| Category(ies) |
Utilities |
| Issue |
Whenever runinng phditto or phindows, we notice the environment variable PHINSTANCE set to 1 (i.e.if PHINSTANCE == 1, then we must have been called through phditto to phrelay).
Could you provide us with the correct usage of the environmant variable: PHINSTANCE?
|
| Solution |
PHINSTANCE will also be set in Photon if it is started from sysinit. In general, Photon sets this variable whenever it starts phlogin (or whatever is specified in the -l option).
The value gets incremented each time Photon starts a new instance of phlogin. If you have phlogin the -O option, it will terminate Photon unless PHINSTANCE is 1.
Typically,
if ph is run from sysinit, phlogin does not get the -O. A shutdown just brings up another phlogin without killing Photon or the graphics driver.
Photon started from Phindows or phditto launches phlogin with the -O option, so a shutdown terminates Photon together with phditto/phwindows. |
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