apps: set NULL as RPC address in some apps

Set opts.rpc_addr to NULL in SPDK applications that usually do not
benefit from starting RPC interface. These include programs in app,
examples and test di

apps: set NULL as RPC address in some apps

Set opts.rpc_addr to NULL in SPDK applications that usually do not
benefit from starting RPC interface. These include programs in app,
examples and test directories.

Some of the tests now require that we explicitly set RPC address,
because some apps no longer use the default SPDK address.

Change-Id: I417a3a756581f44c711257e6d2408d933b40386a
Signed-off-by: Krzysztof Karas <krzysztof.karas@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/22634
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Reviewed-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
Community-CI: Mellanox Build Bot

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thread: add spdk_thread_is_app_thread()

This simply returns true if the current spdk_thread
is the app thread.

This is a simpler replacement for:

spdk_thread_get_app_thread() == spdk_get_thread()

thread: add spdk_thread_is_app_thread()

This simply returns true if the current spdk_thread
is the app thread.

This is a simpler replacement for:

spdk_thread_get_app_thread() == spdk_get_thread()

Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: Ib8754d4ecb91ee8bfb024e8c0b74c42bb8282b32
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/18355
Community-CI: Mellanox Build Bot
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>

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thread: test SPDK spinlocks in an application

This exercises the parts of spdk_spin_*() that are difficult to test in
unit tests. In particular, it tests multiple SPDK threads running on
different p

thread: test SPDK spinlocks in an application

This exercises the parts of spdk_spin_*() that are difficult to test in
unit tests. In particular, it tests multiple SPDK threads running on
different pthreads contending for a lock and it tests pollers and
messages going off CPU with a lock held.

Change-Id: I5cd6ce29c92c44ba63f47332fe339e59eed81553
Signed-off-by: Mike Gerdts <mgerdts@nvidia.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/15534
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@nvidia.com>
Reviewed-by: Shuhei Matsumoto <smatsumoto@nvidia.com>

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