sleep_manager_racecondition test fix for devices with low CPU clock

[maciejbocianski]

Description

This RP contains fix for sleep_manager_racecondition test for very slow devices (like NRF51)
It fixes the test itself as well as side effects of fix introduced in #5046 (us ticker: fix fire interrupt handling)

The idea of the test was to test race condition between main thread and interrupt handler calling the same function. To efficiently test this, each handler call should interrupt main thread to make race more likely. On very slow devices (like NRF51) when we set very low ticker period (e.g less then 1000us for NRF51) there is no much time for thread scheduling. On such slow devices, setting period to 500 us cause that main thread is scheduled very rarely and only handler is constantly called making test unreliable. Fix introduced in #5046 (us ticker: fix fire interrupt handling) changed fire_interrupt function implementation causing more interrupt tailing thus even less time for main thread scheduling.

After introduction of #5046 (us ticker: fix fire interrupt handling) when running sleep_manager_racecondition test on NRF51 (with ticker1.attach_us(&sleep_manager_locking_irq_test, 500);) test is failing with timeout due to the fact that interrupt handler is constantly called and main thread is never scheduled.

#Related issues
#5284
#5046

Pull request type

• Fix
• Refactor
• New Target
• Feature

[0xc0170]

#5284
#5046

This will unblock those 2 (fixes one and unblock TimerEvent PR) as I understand?

👍 for the description

[0xc0170]

/morph build

[maciejbocianski]

Exactly

[mbed-ci]

Build : SUCCESS

Build number : 1216
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/6162/

Triggering tests

/morph test
/morph uvisor-test
/morph export-build
/morph mbed2-build

[mbed-ci]

Build : SUCCESS

Build number : 1216
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/6162/

Triggering tests

/morph test
/morph uvisor-test
/morph export-build
/morph mbed2-build

[0xc0170]

I aborted the test, needs to rerun as this PR was updated

/morph build

[mbed-ci]

Build : FAILURE

Build number : 1219
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/6162/

[maciejbocianski]

[DEBUG] Return: 1
        [DEBUG] Errors: Error: Q9555E: Failed to check out a license.
        [DEBUG] Errors: Unable to connect to the license server. Check that ARMLMD_LICENSE_FILE is set correctly, and the license server is available.
        [DEBUG] Errors: Information about this error is available at: http://ds.arm.com/support/lic56/m96
        [DEBUG] Errors:  General licensing information is available at: http://ds.arm.com/support/licensing/
        [DEBUG] Errors:  If you need further help, provide this complete error report to your supplier or license.support@arm.com.
        [DEBUG] Errors:  - ARMLMD_LICENSE_FILE: '8225@10.10.10.101'
        [DEBUG] Errors:  - LM_LICENSE_FILE: unset
        [DEBUG] Errors:  - ARM_TOOL_VARIANT: unset
        [DEBUG] Errors:  - ARM_PRODUCT_PATH: unset
        [DEBUG] Errors:  - Product location: /usr/local/ARM_Compiler_5.06u3/sw/mappings
        [DEBUG] Errors:  - Toolchain location: /usr/local/ARM_Compiler_5.06u3/bin
        [DEBUG] Errors:  - Selected tool variant: product
        [DEBUG] Errors:  - Checkout feature: compiler5
        [DEBUG] Errors:  - Feature version: 5.0201605
        [DEBUG] Errors:  - Flex error code: -96
        [DEBUG] Errors: Product: ARM Compiler 5.06
        [DEBUG] Errors: Component: ARM Compiler 5.06 update 3 (build 300)
        [DEBUG] Errors: Tool: fromelf [4d35c3]
        [DEBUG] Errors: Finished: 3 information, 0 warning and 1 error messages.

[mbed-ci]

Exporter Build : SUCCESS

Build number : 886
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/exporter/6162/

[0xc0170]

/morph build

[mbed-ci]

Build : SUCCESS

Build number : 1220
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/6162/

Triggering tests

/morph test
/morph uvisor-test
/morph export-build
/morph mbed2-build

[mbed-ci]

Exporter Build : SUCCESS

Build number : 889
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/exporter/6162/

[mbed-ci]

Test : SUCCESS

Build number : 1019
Test logs :http://mbed-os-logs.s3-website-us-west-1.amazonaws.com/?prefix=logs/6162/1019

[mbed-ci]

Exporter Build : FAILURE

Build number : 895
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/exporter/6162/