Abstract: Some embodiments of a system and a method to notify applications of lost computing resources have been presented. For instance, a processing device running on a client machine can monitor a computing resource used by an application, which also runs on the client machine. If the computing resource is lost, then the processing device can notify the application of the loss and provides details about the lost computing resource to the application so that the application can take appropriate action in response to the loss.

Abstract: A computing device identifies a data packet received at a computing device. The computing device allocates memory having a fixed size to store the network data packet. A latency reducer identifies a free space in the memory allocation, the free space comprising a difference between the fixed size of the memory allocation and a size of the network data packet. The latency reducer creates a socket buffer list for the network data packet in the free space, the socket buffer list comprising a plurality of entries to serve as socket queue objects for a plurality of applications.

Abstract: A method and system for sending data in a file system that uses cryptographic signatures to protect data integrity. A computer system calculates a signature based on the content of a page of a memory. The memory is shared by processes that run on the computer system. The computer system write-protects the page while the page is used for calculation of the signature. When a first process attempts to modify the page, a page fault is triggered. In response to the page fault, the content of the page in memory is copied to a new page in the memory. The new page is accessible by the processes. Access to the page by the first process is redirected to the new page. Subsequent to the page fault, access to the page by the second process is also redirected to the new page.

Abstract: A system configures page tables to cause an operating system to copy original page data in a data store when any one of the application processes makes a first write request for the original page data. The system detects a page fault from a memory management unit receiving a first write request from one of the application processes and creates the copy in physical memory to allow the application process to modify the page data copy. The other application processes have read access to the original page data. The system replaces the original page data in the data store with the page data copy in response to receiving a first synchronization request from the application process and updates a page table for one of the other application processes to configure access to the replaced page data in response to receiving a second synchronization request from the one other application process.

Abstract: A method and system for sending data in a file system that uses cryptographic signatures to protect data integrity. A computer system calculates a signature based on the content of a page of a memory. The memory is shared by processes that run on the computer system. The computer system write-protects the page while the page is used for calculation of the signature. When a first process attempts to modify the page, a page fault is triggered. In response to the page fault, the content of the page in memory is copied to a new page in the memory. The new page is accessible by the processes. Access to the page by the first process is redirected to the new page. Subsequent to the page fault, access to the page by the second process is also redirected to the new page.

Abstract: A method and system for sending data in a file system that uses cryptographic signatures to protect data integrity. A computer system calculates a signature based on the content of a page of a memory. The memory is shared by processes that run on the computer system. The computer system write-protects the page while the page is used for calculation of the signature. When a first process attempts to modify the page, a page fault is triggered. In response to the page fault, the content of the page in memory is copied to a new page in the memory. The new page is accessible by the processes. Access to the page by the first process is redirected to the new page. Subsequent to the page fault, access to the page by the second process is also redirected to the new page.

Abstract: A computing device identifies a data packet received at a computing device. The computing device allocates memory having a fixed size to store the network data packet. A latency reducer identifies a free space in the memory allocation, the free space comprising a difference between the fixed size of the memory allocation and a size of the network data packet. The latency reducer creates a socket buffer list for the network data packet in the free space, the socket buffer list comprising a plurality of entries to serve as socket queue objects for a plurality of applications.

Abstract: A computing device receives a first data packet at a network interface card. The network interface card asserts a hard interrupt request on a first processing device based on a interrupt affinity value. A latency reduction module consults a data structure to identify a second processing device and schedules a soft interrupt request for the first data packet on the second processing device. The latency reduction module determines if an affinity threshold is met, and if the affinity threshold is met, updates the interrupt affinity value to reflect the second processing device.

Abstract: A method and system for sending data in a file system that uses cryptographic signatures to protect data integrity. A computer system calculates a signature based on the content of a page of a memory. The memory is shared by processes that run on the computer system. The computer system write-protects the page while the page is used for calculation of the signature. When a first process attempts to modify the page, a page fault is triggered. In response to the page fault, the content of the page in memory is copied to a new page in the memory. The new page is accessible by the processes. Access to the page by the first process is redirected to the new page. Subsequent to the page fault, access to the page by the second process is also redirected to the new page.

Abstract: A system configures page tables to cause an operating system to copy original page data in a data store when any one of the application processes makes a first write request for the original page data. The system detects a page fault from a memory management unit receiving a first write request from one of the application processes and creates the copy in physical memory to allow the application process to modify the page data copy. The other application processes have read access to the original page data. The system replaces the original page data in the data store with the page data copy in response to receiving a first synchronization request from the application process and updates a page table for one of the other application processes to configure access to the replaced page data in response to receiving a second synchronization request from the one other application process.

Abstract: Some embodiments of a system and a method to notify applications of lost computing resources have been presented. For instance, a processing device running on a client machine can monitor a computing resource used by an application, which also runs on the client machine. If the computing resource is lost, then the processing device can notify the application of the loss and provides details about the lost computing resource to the application so that the application can take appropriate action in response to the loss.