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RE: [bluetooth-dev] What is the effects of 'sleep(10)'
i notice that the "negative length" error occurs under the following
condition: while the sending thread is inside the send_acl_packet, the
num_of_completed_packets event is received by the receiving thread, which
calls the update_ncp function. the update_ncp function in turn calls the
send_acl_packet function. therefore the cur_len is modified twice, resulting
in the negative length error. is this a known race condition problem?
why the sending is implemented differently in kernel mode and user mode?
i guess the sti() and cli() functions are used to enable/disable interrupts,
am i right?
ur help will be appreciated!
From: Peter Kjellerstedt
Sent: Mon 28/05/2001 10:08 PM
To: '???'; firstname.lastname@example.org
Subject: RE: [bluetooth-dev] What is the effects of 'sleep(10)'
First of all is this an error case (negative length...),
and second it is only used for user mode stack.
Though I do not see any real reason why it is there...
Sent: 28 May 2001 16:01
Subject: [bluetooth-dev] What is the effects of 'sleep(10)'
In the 'send_acl_data()' function in 'hci.c' file, there is 'sleep(10)'.
Does it significantly affect the speed of the bluetooth module? I think it
cause the host-to-host controller's speed to be lowered.
Dong Kyoo Kim
ACSL, ECE, POSTECH
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