Signed-off-by: Lukasz Dorau <[email protected]>

Do not assert(ptr) in umfMemoryTrackerGetAllocInfo(),
return UMF_RESULT_ERROR_INVALID_ARGUMENT instead.
Replace LOG_WARN() with LOG_DEBUG().

Add utils_env_var_get_str() to utils_common.
Use utils_env_var_get_str() inside utils_env_var_has_str()
and utils_is_running_in_proxy_lib().

Signed-off-by: Lukasz Dorau <[email protected]>

Signed-off-by: Lukasz Dorau <[email protected]>

Add a size threshold to proxy lib to call system allocator
when the size is less than the given threshold (Linux only yet).

Signed-off-by: Lukasz Dorau <[email protected]>

The proxyLib_size_threshold_* tests test the size threshold
of the proxy library (Linux only yet). The size threshold
is set to 64 bytes in this test, so all allocations of:
1) size <  64 go through the default system allocator
   and (umfPoolByPtr(ptr_size < 64) == nullptr)
2) size >= 64 go through the proxy lib allocator
   and (umfPoolByPtr(ptr_size >= 64) != nullptr).

Ref: oneapi-src#894

Signed-off-by: Lukasz Dorau <[email protected]>

Signed-off-by: Lukasz Dorau <[email protected]>