By Barry Sosinsky, Carol Tanielu, Phyllis Romansk
Placed the Strengths of Solaris to paintings in your association gaining knowledge of Solaris eight is an essential advisor to the model of UNIX famed for its community providers and robustness as an internet and alertness server. within, you can find crucial info on fitting, configuring, and optimizing solar Microsystems' newest unencumber, besides the step by step guideline and specialist recommendation you must make Solaris the cornerstone of a good, safe community. insurance contains: fitting Solaris Logging in and coping with classes operating with instructions and utilities coping with documents, folders, and directories utilizing the CDE and OpenWindows pcs fitting and configuring units Configuring a pc for networking developing and handling community printing fitting courses operating with consumer and crew debts Backing up and restoring documents and folders utilizing the Mail and Calendar functions getting access to the web utilizing textual content editors operating with the Bourne, Korn, and C Shells Troubleshooting your pc or server
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Additional resources for Mastering Solaris 8
The common IPC mechanisms are shared memory, message passing, and semaphores. A process creates a segment of shared memory that tells the CPU what changes have occurred. Messages are queued with a head and a tail. That is, a message is packed on the tail of the queue and is received on the head. Each message contains a 32-bit type value followed by a data payload. Semaphores are integer-valued objects that support an increment or decrement of the value of the integer. Processes can sleep on semaphores greater than zero, then awaken when the value reaches zero.
This function may be used to preempt the dispatcher if a thread needs to signal a thread running on another process to enter kernel mode. The delivery of a signal may require interrupting a thread on another processor. The kernel can send an interrupt or trap to start or stop /proc threads on different processors. The kernel also employs a cross-call. Cross-calls are part of the processor-dependent implementation and are used to execute a specific low-level function processor to processor. Besides implementing interprocessor interrupts, cross-calls can maintain virtual memory translation consistency by issuing an unmap operation via the CPU on which the thread has run.
Software traps are initiated by the trap instruction, tcc. Software traps are used primarily for system calls in the Solaris kernel. There are also several fast system calls that act as their own trap. These system calls pass their arguments back and forth via the registers.