Section 9.1

LRM-254

Changes:

SystemVerilog creates a thread of execution for each initial or always block, for each parallel statement in a fork...join block and for each dynamic process. Each continuous assignment can also be considered its own thread. Execution of each thread can be interrupted between statements at a semicolon, but a single statement (not a block) containing no user task or function call cannot be uninterrupted. This allows atomic test-and-set using assignment operators in an if statement.

Section 9.7

LRM-254

Changes:

Execution of each thread can be interrupted between statements at a semicolon, but a single statement (not a block) containing neither a user task call nor a function call shall not be interrupted. This allows atomic test-and-set using assignment operators in an if statement.